Professor Julian Bion

Stress incontinence may be observed in late pregnancy due to urethral sphincter weakness virus 99 order genuine ethambutol on-line. Muscle tone and motility of the entire gastrointestinal tract are diminished due to high progesterone level antimicrobial infection ethambutol 800 mg buy line. Cardiac sphincter is relaxed and regurgitation of acid gastric content into the esophagus may produce chemical esophagitis and heart burn antibiotics to treat pneumonia cheap ethambutol generic. Atonicity of the gut leads to constipation antibiotics for severe acne buy ethambutol 600 mg free shipping, while diminished peristalsis facilitates more absorption of food materials virus cleaner 400 mg ethambutol order free shipping. This, together with high blood cholesterol level during pregnancy, favors stone formation. Nausea, vomiting, mental irritability and sleep disorders are probably due to some psychological background. Postpartum blues, depression or psychosis may develop in a susceptible individual (p. Compression of the median nerve underneath the flexor retinaculum over the wrist joint leading to pain and paresthesia in the hands and arm (Carpal tunnel syndrome) may appear in the later months of pregnancy. Similarly, paresthesia and sensory loss over the anterolateral aspect of the thigh may occur. Fifty percent of serum calcium is ionized which is important for physiological function. Calcium absorption from intestine and kidneys are doubled due to rise in the level of 1, 25 dihydroxy vitamin D3. There is increased mobility of the pelvic joints due to softening of the ligaments caused mainly by hormone. This along with increased lumbar lordosis during later months of pregnancy due to enlarged uterus produces backache and waddling gait. Endocrinology in relation to reproduction includes the knowledge of: Hormones essential for the maturation of the Graa an follicles, ovulation and maintenance of corpus luteum after fertilization. Following conception, transfer of function of pituitary-ovarian axis to placenta, which acts temporarily as a new powerhouse or endocrine organ. Physiological alteration of various endocrine glands namely, the pituitary, thyroid, parathyroid, adrenals and pancreas during pregnancy. The corpus luteum secretes progesterone, 17 -hydroxy progesterone (luteinized granulosa cells) and estradiol, androstenedione (theca cells). Syncytiotrophoblasts contain abundant rough endoplasmic reticulum, Golgi bodies and mitochondria. Syncytiotrophoblasts are the principal site of protein and steroid hormones in pregnancy. For example, placental lactogen is chemically similar to both pituitary growth hormone and prolactin, but biological activity of placental lactogen is much inferior than prolactin or growth hormone produced by pituitary. It consists of a hormone nonspecific (92 amino acids) and a hormone specific (145 amino acids) subunit. Chapter 6 Endocrinology in Relation to Reproduction Functions: 67 (1) It acts as a stimulus for the secretion of progesterone by the corpus luteum of pregnancy. By radioimmunoassay, it can be detected in the maternal serum or urine as early as 8­9 days postfertilization. The hormone is chemically and immunologically similar to pituitary growth hormone and prolactin. They have varied functions including immunosuppressive, paracrine and steroidogenic. Chapter 6 Endocrinology in Relation to Reproduction 69 Fetoplacental unit and biosynthesis of estriol: the placenta is an incomplete endocrine organ as it has no capability of independent steroidogenesis like that of ovary. For steroidogenesis, it depends much on the precursors derived mainly from the fetal and partly from the maternal sources. The biosynthesis pathway in the final formation of estriol is shown diagrammatically in the scheme above. Following the development of trophoblast, progesterone is synthesized and secreted in increasing amount from the placenta. The placenta can utilize cholesterol as a precursor derived from the mother for the production of pregnenolone. Pregnenolone is converted to progesterone in the endoplasmic reticulum by 3 -hydroxy steroid dehydrogenase. The daily production rate of progesterone in late normal pregnancy is about 250 mg. After delivery, the plasma progesterone decreases rapidly and is not detectable after 24 hours. Functions of the steroid hormones (estrogen and progesterone): It is indeed difficult to single out the function of one from the other. Estrogen causes hypertrophy and hyperplasia of the uterine myometrium, thereby increasing the accommodation capacity and blood ow of the uterus. Progesterone in conjunction with estrogen stimulates growth of the uterus, causes decidual changes of the endometrium required for implantation and it inhibits myometrial contraction. Development and hypertrophy of the breasts during pregnancy are achieved by a number of hormones. Hypertrophy and proliferation of the ducts are due to estrogen, while those of lobuloalveolar system are due to combined action of estrogen and progesterone (details are given below). Both the steroids are required for the adaptation of the maternal organs to the constantly increasing demands of the growing fetus. Progesterone maintains uterine quiescence, by stabilizing lysosomal membranes and inhibiting prostaglandin synthesis. Progesterone and estrogens are antagonistic in the process of labor (see Chapter 12). Together they cause inhibition of cyclic uctuating activity of gonadotropin­gonadal axis thereby preserving gonadal function. These biochemical changes have been largely replaced by biophysical profiles (see Chapter 11). The main source of production is the corpus luteum of the ovary but part of it may be also produced by the placenta and decidua. It has been claimed that relaxin relaxes myometrium, the symphysis and sacroiliac joints during pregnancy and also helps in cervical ripening by its biochemical effect. The basic purpose of these changes is to adjust the internal environment of the mother to meet the additional requirements imposed by metabolic changes during pregnancy as well as to meet the extra demands by the growing fetus. The specific anatomical and physiological changes in the individual endocrine glands are described in the next page. Sometimes, the pituitary enlargement may impinge on the optic chiasma causing bitemporal hemianopia. The pituitary gland during pregnancy becomes more susceptible to alterations in blood supply. Sudden hypotension following postpartum hemorrhage may cause infarction of the gland (Sheehan Syndrome). Growth hormone level is elevated due to growth hormone variant made by syncytiotrophoblast of the placenta and this explains partly the weight gain observed during normal pregnancy. All the pregnancy-induced changes in the pituitary revert to normal within few months after delivery. Maternal serum iodine levels fall due to increased renal loss and also due to transplacental shift to the fetus. There is rise in the basal metabolic rate, which begins at about the third month, reaches a value of +25% during the last trimester. Till then the fetus is entirely dependent upon the maternal supply of T4 through the placenta, for all neurologic development. Maternal total T4 and T3 are increased by 18 weeks but free T4 and T3 levels are unchanged. Secretion of T4 and T3 is 20:1, but biological activity of T3 is five times more than that of T4. Level of calcitonin - a thyroid hormone secreted by the parafollicular cells, increases by 20%. Calcitonin protects the maternal skeleton from excess bone loss during pregnancy and lactation. The explanations of physiologic hypercortisolism in pregnancy are: Increased plasma cortisol half-life, delayed plasma clearance by the kidneys and resetting of hypothalamic-pituitary-adrenal feedback mechanism. The marked demand of calcium (25­30 g) by the fetus during the second half of pregnancy is achieved by an increase in maternal 1, 25 dihydroxy vitamin D levels. The absorption and turnover of calcium occur well in advance of fetal skeletal mineralization. Total serum calcium level during pregnancy falls slightly but ionized calcium levels remain unchanged. In pregnancy, there is hyperinsulinemia particularly during third trimester which coincides with the peak concentration of placental hormones. This helps increased transfer of glucose from the mother to the fetus through the placenta (see p. During puberty there is proliferation of fibrofatty tissue without any change in the alveoli-ductal system. The endocrine control of lactation can be divided into following stages: (a) Preparation of breast (mammogenesis), (b) synthesis and secretion of milk by breast alveoli (lactogenesis), (c) ejection of milk (galactokinesis) and (d) maintenance of lactation (galactopoiesis). Secretion and ejection of milk and maintenance of lactation are discussed in page 172. While biological variations may occur in different geographical areas, pregnancy is rare below 12 years and beyond 50 years. Lina Medina in Lima, Peru was the youngest one, delivery by cesarean section when she was only 5 years and 7 months old and the oldest one at 57 years and 4 months old. But, fertilization usually occurs 14 days prior to the expected missed period and in a previously normal cycle of 28 days duration, it is about 14 days after the first day of the period. Thus, the true gestation period is to be calculated by subtracting 14 days from 280 days, i. This is called fertilization or ovulatory age and is widely used by the embryologist. However, cyclic bleeding may occur up to 12 weeks of pregnancy, until the decidual space is obliterated by the fusion of decidua vera with decidua capsularis. Such bleeding is usually scanty, lasting for a shorter duration than her usual and roughly corresponds with the date of the expected period. This type of bleeding should not be confused with the commonly met pathological bleeding, i. Pregnancy, however, may occur in women who are previously amenorrheic - during lactation and puberty. Morning sickness (Nausea and vomiting) is inconsistently present in about 70% cases, more often in the first pregnancy than in the subsequent one. It usually appears soon following the missed period and rarely lasts beyond 16 weeks. Its intensity varies from nausea on rising from the bed to loss of appetite or even vomiting. Frequency of micturition is quite troublesome symptom during 8­12th week of pregnancy. It is due to (1) resting of the bulky uterus on the fundus of the bladder because of exaggerated anteverted position of 74 Textbook of Obstetrics the uterus, (2) congestion of the bladder mucosa and (3) change in maternal osmoregulation causing increased thirst and polyuria (see p. The nipple and the areola (primary) become more pigmented specially in dark women. To elicit the test, the uterus is cupped between the internal fingers and the external fingers for about 2­3 minutes. During contraction, the uterus becomes firm and well defined but during relaxation, becomes soft and ill defined. After 10th week, the relaxation phase is so much increased that the test is difficult to perform. The materials for these tests are supplied in kits containing all the reagents needed to do a test. Therefore, pregnancy test is positive if there is no agglutination (schematic presentation above). It can detect pregnancy as early as 8­9 days after ovulation (day of blastocyst implantation). Other uses of pregnancy tests: Apart from diagnosis of uterine pregnancy, the tests are employed in the diagnosis of ectopic pregnancy (see p. Advantages: They are advantageous over the biological methods because of their speed, simplicity, accuracy and less cost. Biological tests were based on the classic discovery of Aschheim and Zondek in 1927. Doppler effect of ultrasound can pick up the fetal heart rate reliably by 10th week. The gestational sac (true) must be differentiated from pseudogestational sac (see p. The new features that appear are: "Quickening" (feeling of life) denotes the perception of active fetal movements by the women. Its appearance is an useful guide to calculate the expected date of delivery with reasonable accuracy (see later in the chapter). Approximate duration of pregnancy can be ascertained by noting the height of the uterus in relation to different levels in the abdomen. The height of the uterus is midway between the symphysis pubis and umbilicus at 16th week; at the level of umbilicus at 24th week and at the junction of the lower third and upper two-thirds of the distance between the umbilicus and ensiform cartilage at 28th week. Braxton-Hicks contractions are evident, the features of which have been mentioned in p. However, the test may not be elicited in cases with scanty liquor amnii, or when the fetus is transversely placed. Radiologic evidence of fetal skeletal shadow may be visible as early as 16th week (see p. Fundal height: e distance between the umbilicus and the ensiform cartilage is divided into three equal parts.

Controlled delivery of the after-coming head in breech to lessen the dangers of sudden decompression antibiotics quick reference 800 mg ethambutol order overnight delivery. The compression e ect of forceps antibiotic resistance in the environment purchase ethambutol 400 mg with amex, on the cranium should be minimal when correctly applied over the biparietal antibiotic treatment for sinus infection purchase ethambutol mastercard, bimalar placement virus with rash generic ethambutol 400 mg with visa, and should not be more than required to grasp the fetal head antibiotics lecture ethambutol 400 mg order online. Indications for Operative Vaginal Delivery (Forceps/Ventouse) Maternal Inadequate expulsive e orts Maternal exhaustion (distress) Where expulsive e orts (Valsalva) are to be avoided. Episiotomy: It is usually done during traction when the perineum becomes bulged and thinned out by the advancing head. The fingers are used to guide the blade during application and to protect the vaginal wall. The handle of the left blade is taken lightly by three fingers of the left hand ­ index, middle and thumb in a pen holding manner and is held vertically almost parallel to the right inguinal ligament. The fenestrated portion of the blade is placed on the right palm with the tip (toe) pointing upwards. The blade is introduced between the guiding internal fingers and the fetal head, manipulated by the thumb. As the blade is pushed up and up, the handle is carried downwards and backwards, traversing wide arc of a circle towards the left until the shank is to lie straight on the perineum. When correctly applied, the blade should be over the parietal eminence, the shank should be in contact with the perineum and the superior surface of the handle should be directed upwards. The right blade is introduced in the same manner as with left one but holding it with the right hand. Minor difficulty in locking can be corrected by depressing the handles on the perineum. In case of major difficulty, the blades are to be removed, the causes are to be sought for (vide infra) and the blades are to be reinserted. Strong traction is not needed as the only resistance to overcome is the perineum and the coccyx. Gripping of the articulated forceps during traction: the traction is given by gripping the handle, placing the middle finger in between the shanks with the ring and index fingers on either side on the finger guard. During the final stage of traction, the four fingers are placed in between the shanks and the thumb which is placed on the under surface of the handles and exerts the necessary force. In low forceps operation depending upon the station of the head, the direction of the pull is downwards and backwards until the head comes to the perineum. The pull is then directed horizontally straight towards the operator till the head is almost crowned. Following the birth of the head, usual procedures are to be taken as in normal delivery. Perineal and vulval infiltration with 1% lignocaine is enough for local anesthesia. The blades are introduced as in the low forceps operation with long-curved forceps except that two fingers are to be introduced into the vagina for the application of the left blade. Traction is given holding the articulated forceps with the fingers placed in between the shanks and the thumb on the under surface of the handles. The commonly used forceps is long curved one with or without axis-traction device. Introduction of the blades: e introduction of the blades is to be done after prior correction of the malrotation. An assistant is required to hold the left handle after its introduction (b) With axis-traction device: While applying the left blade, the traction-rod already attached to the blade is held backwards. During introduction of the right blade, the traction-rod must be held forwards otherwise it will prevent locking of the blades. Traction: (a) Without axis-traction device: e direction of pull is rst downwards and backwards, then (horizontal or straight pull) and finally upwards and forwards (b) With axis-traction device: e traction handle is to be attached to the traction rods. When the base of the occiput comes under the symphysis pubis, the traction-rods are to be removed. During application of the blades: the causes are: (1) Incompletely dilated cervix (2) unrotated or nonengaged head. Difficulty in locking: the causes are: (1) Application in unrotated head (2) improper insertion of the blade (not far enough in) (3) failure to depress the handle against the perineum and (4) entanglement of the cord or fetal parts inside the blades. Difficulty in traction: the causes of failure to deliver with traction are: (1) Undiagnosed occipitoposterior position (2) faulty cephalic application (3) wrong direction of traction (4) mild pelvic contraction and (5) Constriction ring. Slipping of the blades: the causes are: (1) the blades are not introduced far enough in (2) faulty application in occipitoposterior position. The blades should lie equidistant from the sinciput and occiput, otherwise the blades may slip during traction. Horizontal traction is given until the root of the nose is under the symphysis pubis. But the handles should be kept well forward to avoid grasping of the neck by the tips of the blade. Traction is made like that of occipitoanterior to bring the chin well below and then round the symphysis pubis. The concavity of the slight pelvic curve should correspond to the side towards which the occiput lies. The posterior blade is inserted directly under guidance of the right hand placed between the head and the hollow of the sacrum. The forceps handles are depressed down and the handle tips are brought into alignment to correct the asynclitism. Piper forceps is a specialized forceps, used to assist the delivery of the after-coming head of breech. It refers to forceps delivery only to shorten the second stage of labor when maternal and/or fetal complications are anticipated. The indications are: (1) Eclampsia (2) heart disease (3) previous history of cesarean section (4) postmaturity (5) low-birth-weight baby (6) to curtail the painful second stage and (7) patients under epidural analgesia. Prophylactic forceps should not be applied until the criteria of low forceps are fulfilled. The procedure should be conducted in an operation theater keeping everything ready for cesarean section. If moderate traction leads to progressive descent of the fetal head, the delivery is completed vaginally, if not cesarean section is done immediately. Many unnecessary cesarean sections or difficult vaginal deliveries can thus be avoided. Only through skill and judgment, proper selection of the case ideal for forceps can be identified. Even if applied in wrong cases, one should resist the temptation to give forcible traction in an attempt to hide the mistake. The pulling force is dragging the cranium while in forceps, the pulling force is directly transmitted to the base of the skull. Soft cups, silc cup [silicone rubber or disposable plastic (Mityvac)] cups have better adherence to the fetal scalp. These cups could be folded and introduced into the vagina without much discomfort. Rigid plastic cup (Kiwi Omnicup) is safe, effective and is useful for rotational delivery. The cup is connected to a pump through a thick-walled rubber tube by which air is evacuated. Chance of scalp avulsion or subaponeurotic hemorrhage (iii) suspected fetal coagulation disorder and (iv) suspected fetal macrosomia (4 kg). It helps in autorotation It is not a space-occupying device like the forceps blades Traction force is less (10 kg) compared to forceps It is comfortable and has lower rates of maternal trauma and genital tract lacerations Analgesia need is less. Pudendal block with perineal in ltration is adequate but for forceps regional or general anesthesia is often needed Reduced maternal pelvic oor injuries and is advocated as the instrument of rst choice. Perineal injury (3rd and 4th degree tears) are less compared to forceps Postpartum maternal discomfort (pain) are less compared to forceps Easier to learn comparing to forceps Simplicity of use in delivery makes it convenient to the operator (suitable for trained midwives) Advantages of Forceps Over Ventouse In cases, where moderate traction is required, forceps will be more e ective compared to ventouse Forceps operation can quickly expedite the delivery in case of fetal distress where ventouse will be unsuitable as it takes longer time It is safer at any gestational age baby (even < 36 weeks). The fetal head remains inside the protective cage It can be employed in anterior face or in after-coming head of breech presentation, where ventouse is contraindicated Lesser neonatal scalp trauma, retinal hemorrhage, jaundice or cephalhematoma compared to ventouse Higher rate of successful vaginal delivery as ventouse has got higher failure rates than forceps Cup detachment (Pop-o) occurs when the vacuum is not maintained in ventouse. No such problems once forceps blades are correctly applied Number of types of forceps (p. The instrument should be assembled and the vacuum is tested prior to its application. The cup is introduced after retraction of the perineum with two fingers of the other hand. The cup is placed against the fetal head nearer the occiput (flexion point) with the "knob" of the cup pointing towards the occiput. Flexion or pivot point is an imaginary site located midsagittally about 6 cm from the center of the anterior fontanel or about 3 cm in front of the posterior 662 Textbook of Obstetrics fontanel. A check is made using the fingers round the cup to ensure that no cervical or vaginal tissue is trapped inside the cup. The scalp is sucked into the cup and an artificial caput succedaneum (chignon) is produced. On no account, traction should exceed 30 minutes As soon as the head is delivered, the vacuum is reduced by opening the screw-release valve and the cup is then detached. Usually it resolves by one or two weeks (4) subaponeurotic (subgaleal) hemorrhage (not limited by suture line as it is not subperiosteal) (5) intracranial hemorrhage (rare) (6) retinal hemorrhage (no long-term effect) and (7) jaundice. Maternal: the injuries are uncommon but may be due to inclusion of the soft tissues such as the cervix or vaginal wall inside the cup. The instrument, as deviced by Malmstrom, consists of: (1) suction cup (2) vacuum generator and (3) traction tubing device. The indications are same as those of forceps except that it cannot be employed in face or after coming head of breech. Vacuum: Causes lower rates of maternal trauma and genital tract lacerations, but causes more neonatal scalp trauma and cephalhematoma compared to forceps. The operator must have knowledge, experience and skill to use and also the willingness to abandon the procedure when felt difficult. The risk of fetal injury associated with instrumental vaginal delivery is instrument specific. The sequential use of ventouse and forceps increases the risk of trauma both to the mother and the neonate. Many women (79%) desire subsequent vaginal delivery compared with women delivered by cesarean section (39%). The incidence of spontaneous version in breech presentation is nearly 55% after 32 weeks and about 25% after 36 weeks. Internal: the conversion is done principally by one hand introducing into the uterus and by the other hand on the abdomen. Bipolar (Braxton-Hicks): the conversion is done introducing one or two fingers through the cervix and by the other hand on the abdomen. When the cephalic pole is brought down to the lower pole of the uterus, it is called cephalic version and when the podalic pole is brought down, it is called podalic version. Real time ultrasound examination is done to confirm the diagnosis and adequacy of amniotic flood volume. She is to lie on her back with the shoulders slightly raised and the thighs slightly flexed. The pressure should be intermittent to push the head down towards the pelvis and the breech towards the fundus until the lie becomes transverse. The intermittent pressure is exerted till the head is brought to the lower pole of the uterus. There may be undue bradycardia due to head compression which is expected to settle down by 10 minutes. If however fetal bradycardia persists, the possibility of cord entanglement should be kept in mind and in such cases reversion may have to be considered. The association of placenta previa or congenital malformation of the uterus should be excluded. However, it may be employed in singleton pregnancy to expedite delivery in adverse conditions where the cesarean section facilities are lacking. Such conditions are: (1) transverse lie with cervix fully dilated and (2) cord prolapse with cervix fully dilated with transverse lie or head high up and the baby is alive. It is then pushed up into the uterine cavity keeping the back of the hand against the uterine wall until the hand reaches the podalic pole. The delivery is usually completed with breech extraction during uterine contractions. Step V: Routine exploration of the uterovaginal canal to exclude rupture of the uterus or any other injury. The fetal risk includes asphyxia, cord prolapse and intracranial hemorrhage apart from all hazards of breech delivery (see p. However, it may be a lifesaving procedure at places, specially in the rural areas of the developing countries, where it is not possible to transport the patient with placenta previa to an equipped medical center. Its chief indication is lesser degree of placenta previa when the fetus is dead, deformed or previable. The cervix must be at least two fingers dilated to facilitate manipulation by pushing up of the head to one iliac fossa and to grasp one leg at the ankle. Bringing down of one leg facilitates compression over the placenta and thereby stops the bleeding. It results in pelvic hematoma formation, orthopedic and neurological complications. In modern obstetric practice, virtually there is hardly any place for destructive operations. These procedures are difficult and may be dangerous too unless the operator is sufficiently skilled. Unfortunately, one may have to perform such operations while working in the unorganized sector.

It represents the space occupied by the biparietal diameter of the head while negotiating the brim in flat pelvis antibiotic resistance worldwide buy generic ethambutol 800 mg on-line. Transverse (12 cm or 4 ¾"): It cannot be precisely measured as the points lie over the soft tissues covering the sacrosciatic notches and obturator foramina antibiotics for dogs with heartworms purchase line ethambutol. Its anterior wall is deficient at the pubic arch; Obstetric Signi cance of Plane of Least Pelvic Dimension its lateral walls are formed by ischial bones and It is the narrowest plane in the pelvis the posterior wall includes whole of the coccyx bacteria song 800 mg ethambutol buy. This plane corresponds roughly to the origin of levator Shape: It is anteroposteriorly oval antibiotics for pustular acne ethambutol 800 mg order with amex. Posterior sagittal (5 cm or 2"): It is the distance between the tip of the sacrum and the midpoint of bispinous diameter spironolactone versus antibiotics for acne 600 mg ethambutol buy otc. Axis: It is represented by a line joining the center of the plane with the sacral promontory. Thus, it consists of two triangular planes with a common base formed by a line joining the ischial tuberosities. The apex of the anterior triangle is formed by the inferior border of the pubic arch and that of the posterior triangle by the tip of the coccyx. Diameters: Anteroposterior: It extends from the lower border of the symphysis pubis to the tip of the coccyx. It measures 13 cm or 5 ¼" with the coccyx pushed back by the head when passing through the introitus in the second stage of labor; with the coccyx in normal position, the measurement will be 2. Transverse - Syn: Intertuberous (11 cm or 4 ¼"): It measures between inner borders of ischial tuberosities. It is clinically measured by the distance between the sacrococcygeal joint and anterior margin of the anus. Subpubic angle: It is formed by the approximation of the two descending pubic rami. Pubic arch: Arch formed by the descending rami of both the sides is of obstetric importance. Normally, it measures 6 cm in between the pubic rami at a level of 2 cm below the apex of the subpubic arch. The narrower the pubic arch, the more is the fetal head displaced backward and the less the room available for it. Normally, the subpubic arch is rounded and less space is wasted under the symphysis pubis. This measurement is the waste space of Morris and should not exceed 1 cm in a normal pelvis. The distance between the said point and the tip of the sacrum is called available anteroposterior diameter of the outlet. Midpelvic plane: the midpelvic plane extends from the lower margin of the symphysis pubis through the level of ischial spines to meet either the junction of S4 and S5 or tip of the sacrum depending upon the configuration of the sacrum. If the plane meets the tip of the fifth sacrum, it coincides with the plane of least pelvic dimensions. It is uniformly curved with the convexity fitting with the concavity of the sacrum. Due to softening of the ligaments during pregnancy, there is considerable amount of gliding movement. Sacroiliac articulation: It is a synovial joint and is an articulation between the articular surface of the ilium and sacrum. There is increase of the anteroposterior diameter of the inlet during labor by the rotatory movement of the sacroiliac joints. In dorsal lithotomy position, the anteroposterior diameter of the outlet may be increased to 1. Furthermore, the coccyx is pushed back while the head descends down to the perineum. The supervision should be regular and periodic in nature according to the need of the individual. Actually prenatal care is the care in continuum that starts before pregnancy and ends at delivery and the postpartum period. Antenatal care comprises of: Careful history taking and examinations (general and obstetrical) woman. The objective is to ensure a normal pregnancy with delivery of a healthy baby from a healthy mother. The criteria of a normal pregnancy are delivery of a single baby in good condition at term (between 38 and 42), with fetal weight of 2. Components of routine prenatal care are recorded in a standardized pro forma (antenatal record book). Gravida and parity: Gravida denotes a pregnant state both present and past, irrespective of the period of gestation. As such, a woman who delivers twins in first pregnancy is still a gravida one and para one. A pregnant woman with a previous history of two abortions and one term delivery can be expressed as fourth gravida but primipara. It is customary in clinical practice to summarize the past obstetric history by two digits (the first one relates with viable births and the second one relates with abortion) connected with a plus sign affixing the letter "P" Thus. A pregnant woman with a previous history of four births or more is called grand multipara. Terminology A nullipara is one who has never completed a pregnancy to the stage of viability. Multipara is one who has completed two or more pregnancies to the stage of viability or more. A pregnancy long after marriage without taking recourse to any method of contraception is called low fecundity and soon after marriage is called high fecundity. Occupation: It is helpful in interpreting symptoms of fatigue due to excess physical work or stress or occupational hazards. Occupation of the husband: A fair idea about the socioeconomic condition of the patient can be assessed. This knowledge is of value: (a) to anticipate the complications likely to be associated with low social status such as anemia, preeclampsia, prematurity, etc. Period of gestation: the duration of pregnancy is to be expressed in terms of completed weeks. In such a situation, ultrasonography in first trimester of pregnancy is more reliable to estimate the gestational age. Even if there is no complaint, enquiry is to be made about the sleep, appetite, bowel habit and urination. History of present illness: Elaboration of the chief complaints as regard their onset, duration, severity, use of medications and progress is to be made. History of present pregnancy: the important complications in different trimesters of the present pregnancy are to be noted carefully. These are hyperemesis and threatened abortion in first trimester, features of pyelitis in second trimester and anemia, preeclampsia and antepartum hemorrhage in the last trimester. Number of previous antenatal visits (booking status), immunization status, has to be noted. Any medication or radiation exposure in early pregnancy or medical-surgical events during pregnancy should be enquired. The previous obstetric events are to be recorded chronologically as per the pro forma given on the next page. To be relevant, enquiry is to be made whether she had antenatal and intranatal care before. Year and date Pregnancy events Labor events Methods of delivery Puerperium Baby Weight and sex Condition at birth (Apgar score) Breast-feeding Immunization 1. An undue long gap between the last and the present pregnancy requires careful supervision during pregnancy and labor. The minimum spacing between first birth and subsequent pregnancy should be 2 years. The first day of the menstruation being the important event can be remembered precisely while the last day of the period is often tailed off and hence may be forgotten. Alternatively, one can count back 3 calendar months from the first day of the last period and then add 7 days to get the expected date of delivery; the former method is commonly employed. Chapter 10 Antenatal Care, Preconceptional Counseling and Care 109 Example: the patient had her first day of last menstrual period on 1st January. Past medical history: Relevant history of past medical illnesses (urinary tract infections, tuberculosis) is to be elicited. Past surgical history: Previous surgery-general or gynecological, if any, is to be enquired. Family history: Family history of hypertension, diabetes, tuberculosis, blood dyscrasia, known hereditary disease, if any, or twinning is to be enquired. Personal history: Contraceptive practice prior to pregnancy, smoking or alcohol habits are to be enquired. Previous history of blood transfusion, corticosteroid therapy, any drug allergy and immunization against tetanus or prophylactic administration of anti-D immunoglobulin are to be enquired. Nutrition: Good/average/poor Height: Short stature is likely to be associated with a small pelvis. Thus, in primigravidae, the height is to be measured to screen out the short stature. Repeated weight checking in subsequent visit should preferably be done in the same weighing machine. Pallor: the sites to be noted are lower palpebral conjunctiva, dorsum of the tongue and nail beds. Jaundice: the sites to be noted are bulbar conjunctiva, under surface of the tongue, hard palate and skin. Tongue, teeth, gums and tonsils: Evidences of malnutrition are evident from glossitis and stomatitis. Evidence of any source of infection in the mouth is to be eradicated least there be a chance of autogenous infection in puerperium. Slight physiological enlargement of the thyroid gland occurs during pregnancy in 50% of cases. The sites for evidence of edema are over the medial malleolus and anterior surface of the lower one-third of the tibia. Causes of edema in pregnancy: (1) Physiological (2) Preeclampsia (3) Anemia and hypoproteinemia (4) Cardiac failure (5) Nephrotic syndrome. Dependent edema is physiological in pregnancy but generalized edema (anasarca) or facial edema can be a first sign of disease. Physiological edema: the cause of physiological edema is due to increased venous pressure of the inferior extremities by the gravid uterus pressing on the common iliac veins. The features of the physiological edema are: (1) slight degree (ankle edema), usually confined to one leg, more on the right, (2) unassociated with any other features of preeclampsia or proteinuria, (3) disappears on rest alone, (4) other pathologies of cardiac, renal and hematological are absent. Systemic examination: Heart, Lungs, Liver and Spleen: Breasts: Examination of the breasts helps to note the presence of pregnancy changes but also to note the nipples (cracked or depressed) and skin condition of the areola. The purpose is to correct the abnormality; if any, so that there will be no difficulty in breastfeeding immediately following delivery. Vaginal: Examination is done in the antenatal clinic when the patient attends the clinic for the first time before 12 weeks. It is done: (1) to diagnose the pregnancy, (2) to corroborate the size of the uterus with the period of amenorrhea and (3) to exclude any pelvic pathology. Internal examination is, however, omitted in cases with previous history of miscarriage, occasional vaginal bleeding in present pregnancy. Steps of vaginal examination: Vaginal examination is done in the antenatal clinic. The patient must empty her bladder prior to examination and is placed in the dorsal position with the thighs flexed along with the buttocks placed on the foot-end of the table. Hands are washed with soap and a sterile glove is put on the examining hand (usually right). Inspection: By separating the labia-using the left two fingers (thumb and index), the character of the vaginal discharge, if any, is noted. Speculum examination: this should be done prior to bimanual examination, especially when the smear for exfoliative cytology or vaginal swab is to be taken. The cervix and the vault of the vagina are inspected with the help of good light source placed behind. Cervical smear for exfoliative cytology or a vaginal swab from the upper vagina, in presence of discharge, may be taken. Bimanual: Two fingers (index and middle) of the right hand are introduced deep into the vagina while separating the labia by left hand. Gentle and systematic examinations are to be done to note: (1) Cervix: consistency, direction and any pathology. Early pregnancy is the best time to correlate accurately uterine size and duration of gestation. If signi cant proteinuria is found, "clean catch" specimen of midstream urine is collected for culture and sensitivity test. To collect the midstream urine, the patient is advised to clean the vulva and to collect the urine in a clean container during the middle of the act of urination. Presence of nitrites and/or leukocyte esterase by dipstick indicates urinary tract infection (p. Cervical cytology study by Papanicolaou stain has become a routine in many clinics. Booking (18­20 weeks) scan has got advantages in addition to first trimester scan: (i) detailed fetal anatomy survey and to detect any structural abnormality including cardiac, (ii) placental localization. Ultrasound examination is performed as a routine at 18­20 weeks though doubt remains about its absolute benefit.

The dermis displays a dense xeloda antibiotics cheap ethambutol 400 mg on-line, patchy virus 8 month old baby discount 800 mg ethambutol visa, or diffuse lymphocytic infiltrate with focal collections of neutrophils antibiotic skin infection generic 400 mg ethambutol visa. Collections of neutrophils are also noted intraepidermally and subepidermally as well as in the form of suppurative folliculitis antibiotics for uti south africa generic 800 mg ethambutol visa. Lymphocytic exocytosis and extensive necrosis of individual keratinocytes within the external root sheath and surrounding epidermis are present antibiotic resistance food chain discount 800 mg ethambutol free shipping. In advanced lesions, the necrosis of the follicles has become confluent, and neutrophils are present in the superficial dermis. The hair follicle is destroyed, and a depressed scar and scarring alopecia result. Because of the rapid progression of this disorder, early and aggressive therapy is recommended. The preferred therapeutic regimen is similar to that used to treat dissecting folliculitis. The combined therapies include aggressive medical and surgical débridement, antibiotics, retinoids, corticosteroids, and zinc. Cosmetic surgical options could be considered for localized inactive areas of permanent alopecia. In Olsen E, editor: Disorders of hair growth (diagnosis and treatment), ed 2, New York, 2004, McGraw-Hill, pp 87­122. The current state of play in the histopathologic assessment of alopecia: two for one or one for two Scarring alopecia: a classification based on microscopic criteria, J Cutan Pathol 21:97­109, 1994. In the vast majority of cases, cutaneous cysts are lined by one type of epithelium, most commonly stratified squamous epithelium. Infrequently, cutaneous cysts may have significant portions of more than one type of epithelium and have been given the appellation hybrid cysts. A pseudocyst, on the other hand, is a cystic cavity that lacks an epithelial lining. In fact, follicular cysts arising from the infundibular (epidermoid cysts) or isthmus portions (trichilemmal cysts) of hair follicles account for the vast majority of cutaneous cysts. Rarely, cysts are developmental in nature and arise from sequestered tissue that has failed to migrate completely during embryogenesis. In contrast, cysts derived from eccrine or apocrine ducts or glands have a double layer of cuboidal to columnar epithelium. Developmental cysts have more variability in the types of epithelia that constitute their cyst linings. It is not unusual to find either pseudostratified columnar or stratified squamous epithelium (or both) in the lining of branchial cleft or bronchogenic cysts. After a histologic diagnosis of a benign cyst is made, no further treatment is necessary except for cosmetic reasons or because of irritation from rupture or superinfection. A sinus is a deep invagination or tract lined by epithelium or granulation tissue. As such, sinuses may be developmental in origin or arise secondary to an exuberant inflammatory reaction. The majority of sinus tracts encountered by dermatopathologists belong to the latter group. Sinus tracts are significant because of their propensity for recurrent infection and risk for malignancy arising secondary to longstanding chronic inflammation. Epidermoid (infundibular) cysts, most verrucous cysts, and pigmented follicular cysts are types of cysts that originate from the follicular infundibulum of terminal hairs. Vellus hair cysts and most milia are derived from the infundibulum of vellus hair follicles. They are located in the dermis of hair-bearing skin, with a predilection for the head, neck, and trunk. They are usually solitary and slow growing and are typically 1 to 5 cm in diameter. A punctum, corresponding to the opening of the cyst to the skin surface, is often seen. Epidermal inclusion cysts resemble infundibular cysts but arise on the palms and soles as a result of traumatic implantation of the epidermis. The gross appearance of cysts is not specific and can overlap with benign or malignant cystic tumors of the skin as well as noncystic lesions. For this reason, excised cysts should be submitted for routine histology to render a definitive diagnosis. Cysts are prone to rupture, resulting in varying degrees of inflammation and scarring. When infected cysts rupture, a prominent mixed suppurative and foreign body granulomatous inflammatory response is elicited. Older lesions tend to have fewer neutrophils and more lymphocytes and plasma cells. B, the cyst lining has an inner granular layer composed of keratinocytes with keratohyaline granules. The cyst lining may be obliterated by the inflammatory and scarring host response. Pigmented follicular cysts have multiple pigmented hair shafts within their cyst cavities and rete ridges extending peripherally into the dermis from the lining epithelium, which are features not typical of epidermoid cysts. Dermoid cysts show an identical cyst lining and mode of keratinization to epidermoid cysts but differ by possessing adnexal structures within the cyst wall and several hair shafts in the cyst cavity. A ruptured epidermoid cyst results in a foreign body giant cell reaction to extravasated keratin. In contrast to proliferating trichilemmal cysts, which have a strong predilection for the scalp, the majority (80%) of proliferating infundibular cysts occurs outside of the head and neck region. The cyst epithelium shows varying degrees of acanthosis, papillomatosis, hypergranulosis, parakeratosis, and hyperkeratosis. More solid areas of proliferating epithelium tend to radiate peripherally into the surrounding dermis and are composed of keratinocytes with abundant eosinophilic cytoplasm and sharp cytoplasmic borders. No cytologic atypia of keratinocytes or infiltrative peripheral growth patterns are seen. In rare instances, epidermoid cysts may have unusual secondary changes involving their cyst lining. A, A proliferating epidermoid cyst has cellular lobules of squamous cells that radiate peripherally from a central cyst, but the periphery of the lesion is well circumscribed. C, Small balls of keratinocytes (squamous eddies) are often seen in the cellular areas of the lesion. Carcinoma is diagnosed by the presence of cytologic atypia or an infiltrative growth pattern at the periphery of the cystic lesion. Verrucous cysts are rare epidermal cysts that are defined histologically by verrucous changes of their stratified squamous linings. These cysts have a predilection for the face, neck, trunk, and extremities of adults. A, Verrucous cysts are characterized by varying degrees of papillomatosis, acanthosis, and hypergranulosis. As a result of their dark brown or blue hue, the clinical differential diagnoses include hidrocystoma, melanocytic lesions such as blue nevi, dermatofibroma, and pigmented basal cell carcinoma. They have a predilection for the head and neck of adults but can also arise on the trunk and rarely on the extremities. They are lined by stratified squamous epithelium, often with a retained rete ridge pattern, that keratinizes through a granular layer. Multiple, large-diameter, terminal hair shafts with medullary pigment and laminated keratin fill the cyst lumen. Although eruptive vellus hair cysts have multiple hair shafts in the cyst cavity similar to pigmented follicular cysts, the hair shafts are of vellus type; that is, they are small in diameter and lack pigmentation. Primary milia arise de novo from the infundibular region of vellus hair follicles and manifest as multiple papules on the face. Secondary milia result from scarring of the dermis caused by trauma, burns, an underlying subepidermal blistering disorder such as epidermolysis bullosa, cicatricial pemphigoid, or porphyria cutanea tarda, or after dermabrasion. Secondary milia may arise from a variety of adnexal structures, such as the infundibulum of vellus hair follicles, eccrine ducts, or implantation of the epidermis. They have a widespread distribution, occurring at sites exposed to trauma, burns, or scarring procedures, and can occur at any age. B, the epithelial lining has a thin inner granular layer, forming laminated keratin, and is histologically indistinguishable from an epidermoid cyst. Milia may result from scarring processes, as in this example of a milium developing at a previous biopsy site. These milia may be seen in continuity with the vellus hair follicles from which they arose in serial sections. Multiple levels may be necessary if a milium is suspected but not seen on the initial levels. In some cases, continuity with an underlying eccrine duct may be seen in serial sections. Vellus hair cysts, in contrast to milia, have multiple cross-sections of vellus hair shafts within their cyst lumens. B, the cyst wall is composed of a thin layer of stratified squamous epithelium with an inner granular layer. Note the multiple, small-diameter vellus hair shafts and keratin within the cyst cavity. A thin layer of stratified squamous epithelium possessing an inner granular layer forms the cyst lining. Occasionally, telogen hair follicles, sebaceous lobules, or small slips of arrector pili muscle may be seen in the cyst wall. Vellus hair cysts may occur as sporadic, solitary lesions on a nonhereditary basis. More commonly, multiple, "eruptive" vellus hair cysts occur and in some cases are inherited in an autosomal dominant manner. The lesions develop abruptly as small, red, tan, brown, or black 1- to 4-mm papules. Vellus hair cysts have a predilection for the trunk, especially the chest, abdomen, and extremities, but also can be found on the neck, face, and groin. Pigmented follicular cysts also share many similar features with vellus hair cysts but have terminal size hairs that contain pigment within the medullary portion of the shafts in their cyst lumens. In this type of keratinization, large, eosinophilic keratinocytes in the inner layer of the cyst lining give rise to compact eosinophilic keratin without an intervening granular layer. Therefore, this mode of keratinization resembles that seen in the outer root sheath of hair follicles or the sac around catagen follicles. Thus, these cysts have been referred to as trichilemmal cysts, isthmus-catagen type of follicular cysts, or pilar cysts. The cysts are smooth, firm nodules, ranging from less than 1 cm to more than 5 cm in diameter. It is more common for an individual to have multiple trichilemmal cysts than a solitary cyst of the scalp. When trichilemmal cysts occur at sites other than the scalp, they are almost always solitary. Intercellular bridges between keratinocytes are absent within the epithelium of the cyst wall. One of the most characteristic features of trichilemmal cysts is the presence of an innermost layer of large keratinocytes with abundant eosinophilic cytoplasm that keratinize abruptly. Trichilemmal cysts are prone to rupture, in which case a foreign body giant cell reaction is elicited in response to the extravasated keratin. Occasionally, cysts may demonstrate areas of trichilemmal cyst and other areas of another type of cyst, such as an epidermoid cyst, resulting in follicular hybrid cysts. The major histologic features that distinguish a proliferating trichilemmal cyst or tumor from a trichilemmal cyst are the presence of multiple, circumscribed squamous lobules, squamous eddies, some degree of nuclear atypia of squamous cells, and usually low mitotic activity in the former. A, Trichilemmal cysts are located in the dermis or subcutis and the cysts are filled with dense eosinophilic keratin. B, Trichilemmal keratinization occurs abruptly from large eosinophilic keratinocytes. C, the outer layer of trichilemmal cysts has a tendency to separate from the remainder of the cyst epithelium. A, A foreign body giant cell reaction is elicited to extravasated keratin from a ruptured trichilemmal cyst. These lesions can vary considerably in size and occasionally exceed 10 cm in diameter. Balls of squamous cells, or squamous eddies, are usually scattered through the lesion. A, the periphery of a proliferating trichilemmal cyst is defined by circumscribed lobules of squamous cells with a pushing, noninfiltrative border. C, Compact cellular lobules of squamous cells and scattered squamous eddies (arrow) comprise a variable portion of the lesions. D, Occasional mitotic figures (arrow) can be observed in the more proliferative zones of the lesion. Less commonly, a solitary cyst (steatocystoma simplex) occurs, usually in adulthood. A malignant proliferating trichilemmal tumor can be diagnosed by its cytologic atypia or infiltrative growth pattern. Features diagnostic of malignancy may be focal, which is why it is prudent to completely remove partly biopsied lesions to exclude sampling errors. Squamous cell carcinoma may resemble a proliferating trichilemmal tumor but lacks trichilemmal differentiation and is usually connected to the epidermis, although it can be cystic. Lesions have a predilection for the arms, chest, axillae, and neck but can also be found on the face, back, or groin region.

Usually a few forms of adipocyte necrosis are present concomitantly virus 8 characteristics of life purchase line ethambutol, the most distinctive being lipomembranous (membranocystic) fat necrosis antibiotics for uti and chlamydia purchase ethambutol in india. Lesions are confined to one or both lower extremities infection 3 months after c-section generic ethambutol 800 mg buy, characteristically arising on the medial lower leg virus sickens midwest purchase cheapest ethambutol and ethambutol. Lipophages (lipophagic fat necrosis antibiotics pancreatitis order ethambutol 600 mg visa, "lipophagic granuloma"), foamy histiocytes within the subcutaneous lobules, are also usually present. Calcification and elastosis may be seen, sometimes resembling the calcified, fragmented elastic fibers that typify pseudoxanthoma elasticum. Superimposed venous stasis changes are typically present and include increased vascularity, extravasated erythrocytes, and hemosiderin in the papillary and sometimes also the reticular dermis. Involvement is confined to the legs of adults, the vast majority of whom are women, most with elevated body mass indexes. In this clinical context, the combined presence of venous stasis changes, septal sclerosis, and lipomembranous and microcystic fat necrosis is specific. In the broader sense of trauma encompassing any external force or agent, either externally 96 applied or injected, traumatic panniculitis may include the more specific entities of nodular cystic fat necrosis (mobile encapsulated lipoma), factitial panniculitis, and cold panniculitis. Factitial panniculitis may be regarded as a distinct subset of traumatic panniculitis with a varied presentation. In factitial panniculitis, a deliberate human action results in panniculitis secondary to the injection of foreign material into the subcutis. The injection could be performed by the affected individual him- or herself, by his or her proxy, or by a medical provider, either as an elective cosmetic procedure or an unintended side effect of medical therapy. Similar to other forms of traumatic panniculitis, the number of lesions is usually limited; in addition, the distribution of lesions is restricted to anatomic sites that are accessible to injection or where cosmetic enhancement has been requested. Cold panniculitis arises in the distinctive clinical settings of cold exposure, including popsicle panniculitis (cheeks of children), equestrian panniculitis (lateral thighs of equestrians and cyclists), and on the scrotum. Lipomembranous fat necrosis, hemorrhage, hemosiderin, and calcification are also commonly present. In the early stages of traumatic panniculitis, particularly factitial panniculitis, neutrophils may predominate. In nodular cystic fat necrosis, the affected fat lobules appear encapsulated by a sclerotic fibrous capsule with a loss of nuclear adipocyte staining and variable superimposed lipophages, lipomembranous fat necrosis, or calcification. In cold panniculitis, lymphocytes and histiocytes aggregate at the junction of dermis and subcutis and variably within the subcutaneous lobules. The effects of foreign materials are commonly identified in reactions secondary to cosmetic fillers. Historically, injection of paraffin and silicone resulted in a granulomatous reaction with numerous empty vacuoles, creating a "Swiss cheese" appearance at scanning magnification. The appearances of a wide variety of injected substances have been reviewed in detail by Requena and colleagues and also Dadzie and colleagues. Liquid silicone produces multiple cavities or cystlike spaces that are irregular in outline. Enlarged fibroblasts (radiation fibroblasts) and endothelial cells (radiation vasculopathy) with hyperchromatic atypical nuclei are also expected. Clinical correlation (cutaneous manifestations limited to radiation field) is essential. Histologic clues to a probable radiation-related process include the presence of radiation fibroblasts, vasculopathy, and a usually more florid mixed inflammatory cell infiltrate than typically seen in morphea. It is a vanishing disorder in developed countries, attributable to adequate postnatal care. Risk factors include scenarios involving hypothermia or hypoxia, including whole-body cooling or a complicated forceps delivery. The trunk and proximal extremities are the most frequently involved, although the head and neck regions may also be involved. Systemic complications include hypercalcemia (sometimes associated with nephrocalcinosis), thrombocytopenia, and hypertriglyceridemia. B,Thefatcellshaveundergone crystallization of the triglycerides in their cytoplasm. Mucormycosis and gemcitabineassociated microangiopathy have rarely been associated with crystal formation. Beyond supportive care, pamidronate may be used to manage significant hypercalcemia or to reduce the risk of nephrocalcinosis. Variable findings include pandermal ischemic necrosis with secondary subepidermal clefting, sparse neutrophils, and vascular thrombosis. Management is directed at control of calcium and phosphate levels and may include sodium thiosulfate, bisphosphonates, or vitamin K supplementation. Trigger factor cessation may entail discontinuation of warfarin or calcium-containing phosphate binders, or parathyroidectomy. Most cases progress acutely, although more protracted, subacute presentation may also occur. The histologic appearance is a mostly lobular panniculitis of predominantly neutrophils. Eosinophils are traditionally associated with medication reactions, although many agents have been associated with neutrophilic panniculitis (see earlier discussion). Erythema nodosum, the prototype of mostly septal panniculitis, may be triggered by numerous medications, including oral contraceptives, sulfa drugs, and dozens of others. By this designation is implied only the histologic picture and a differential diagnosis, usually a hypersensitivity reaction from a drug or arthropod bite. Reported drugs are diverse, including subcutaneous heparin, intramuscular penicillin, and apomorphine. The histologic picture is produced by diverse conditions and can be found from infancy to old age and in either gender. Depending on the etiology, eosinophilic panniculitis may be accompanied by fever, pruritus, and malaise, particularly in association with hypersensitivity reactions to medications. The fat lobules contain mostly eosinophils, usually with few lymphocytes and sometimes neutrophils, with variable septal involvement. Depending on the clinical context, a complete blood count with differential may be worthwhile to screen for eosinophilia. The prognosis of eosinophilic panniculitis is variable but generally favorable, with a very favorable prognosis if the cause can be identified and removed. The terms lipoatrophy and lipodystrophy have been used variably and sometimes interchangeably in the collective medical literature. Some authorities define lipoatrophy as having an inflammatory component (lipodystrophy, having no evidence of inflammation); others use lipoatrophy to describe localized fat loss and lipodystrophy for more generalized involvement. More than a dozen rare genetic lipodystrophies, partial or generalized, have been documented. Lipoatrophic panniculitis of the ankles represents a distinctive inflammatory lipoatrophy that typically affects the ankle region of children. Otherwise, the localized loss of fat produces a localized, non-ulcerated depression of the skin surface. The differential diagnosis includes infection, myelodysplasia, early pancreatic panniculitis, or -1-antitrypsin deficiency panniculitis. Multiple biopsies may be required to document progression of disease and whether an inflammatory component is present. Adverse cutaneous reactions to soft tissue fillers-a review of the histological features, J Cutan Pathol 35:536­548, 2008. Panniculitis: definition of terms and diagnostic strategy, Am J Dermatopathol 22:530­549, 2000. Erythema nodosum and erythema induratum (nodular vasculitis): diagnosis and management, Dermatol Ther 23:320­327, 2010. Subcutaneous panniculitis-like T-cell lymphoma with overlapping clinicopathologic features of lupus erythematosus: coexistence of 2 entities Histopathologic patterns associated with external agents, Dermatol Clin 30:731­748, 2012. The individual adipocytes are also smaller and retracted from each other, resembling embryonic fat 3 Infectious Diseases of the Skin HelenM. The deep variant that resembles an anthill histologically is called myrmecia (inclusion wart). Plane warts (verrucae planae) are flat-topped smooth papules; some appear pigmented. Multiple papules with rough surface are present on the dorsal aspect of the fingers. A, Silhouette: there is papillomatous epidermal hyperplasia with hyperparakeratosis. B, Viral cytopathic changes (keratinocytes with hyperchromatic small nuclei surrounded by a clear halo) are present. Serum is present in the stratum corneum, and the dermal papillae show ectatic capillaries. These cells have a small, dark, hyperchromatic nucleus, which may have irregular contours, giving rise to a "raisinoid" appearance, surrounded by clear cytoplasm (koilocytes). There may be a prominent lichenoid inflammatory reaction at the junction of the base of the lesion and surrounding dermis. A flat wart (verruca plana) lacks papillomatosis and has a basket-weaved stratum corneum. The nucleus, which is not displaced by the inclusions, persists in the cornified layer, where it appears deeply basophilic and surrounded by a clear halo. Epidermodysplasia verruciformis lesions show similar but more pronounced epidermal changes than planar warts. In focal epithelial hyperplasia, there are acanthosis, blunt and thick elongated rete ridges, pale upper epidermal cells, and occasional binucleated keratinocytes. Staining of keratinocytic nuclei indicates a positive result (immunoperoxidase reaction). Mild atypia of keratinocytes is common in warts, but they lack the full-thickness atypia and loss of polarity associated with in situ squamous cell carcinoma. Because diagnostic viral pathologic changes may not always be detectable in warts, they may be confused with other benign papillomatous squamous prolifera- tions, such as verrucoid or digitated variants of seborrheic or actinic keratosis. The presence of a wart may be falsely assumed by incidental, often tissue-processing related changes of keratinocytes associated with "halo" phenomena around nuclei. In immunocompromised patients, the lesions may be widespread and resistant to treatment, and there is an increased risk for the development of squamous cell carcinoma. Koilocytes with "raisin-like" hyperchromatic nuclei and an irregular perinuclear halo, or binucleated cells, may be seen. There is papillomatous mammillated epithelial hyperplasia with hyperkeratosis and koilocytic changes (hyperchromatic nuclei surrounded by a clear halo). Carcinoma is primarily distinguished from condyloma by the lack of maturation and presence of full-thickness keratinocytic atypia. There is acanthosis and full-thickness epithelial atypia with loss of polarity of keratinocytes. There are several distinct clinical variants: herpetic whitlow (painful vesicles usually on the distal fingers of medical personnel after direct contact with affected patients), eczema herpeticum (generalized infection in atopic patients), and herpes gladiatorum (in wrestlers). Adnexal structures may be primarily involved (herpetic folliculitis or syringitis). On occasion, a herpetic dermatitis may be associated with a dense lymphoid infiltrate simulating lymphoma (pseudolymphoma). Reactivation can be triggered by factors such as stress, trauma, surgery, fever, immunosuppression, or pregnancy. In immunocompromised patients, the disease is more severe and extensive and may become disseminated. First episode genital lesions are treated with oral antiviral agents (acyclovir, famciclovir, or valacyclovir). If recurrent episodes are treated with oral antiviral agents within the first 2 days after onset, they may have a shorter duration and reduced severity. B, Viral cytopathic changes are present characterized by multinucleated keratinocytes and pale nuclei with peripheral condensation of chromatin. Primary infection results in varicella (chickenpox), a highly contagious childhood disease. Reactivation of latent infection results in herpes 110 zoster (shingles), with incidence increasing with advancing age. Lesions develop in successive crops and are found at clinical examination in different stages of development: papules, vesicles on an erythematous base resembling "dew drops on rose petals," pustules, crusts, and pink depressions left after crusts fall. This illness affects adults and begins with a prodrome of pain in the area, most frequently the lumbar and thoracic regions, innervated by the sensory ganglia harboring the virus. Recent reports have described a granulomatous pattern in the biopsies of patients with herpes zoster in the setting of concurrent chronic lymphocytic B-cell lymphoma or drug-induced hypersensitivity syndrome. Direct immunofluorescence and immunoperoxidase methods allow rapid, sensitive, and specific diagnosis. On occasion, a nonviral vesicular dermatitis, such as from a drug reaction or pemphigus, may show acantholysis and multinucleation of keratinocytes that may simulate a herpesvirus infection. Antiviral agents such as acyclovir, famciclovir, and valacyclovir can be used in high-risk patients to decrease morbidity and mortality. They are most effective if therapy is initiated in the first 24 to 48 hours after the onset of rash. Ulcers and petechial macules and papules may develop in immunocompromised patients. In adults, varicella is more severe, and primary varicella pneumonia is more frequent. The incidence and severity of herpes zoster is greater in immunocompromised hosts, who may develop disseminated skin lesions and fatal systemic disease. The intranuclear inclusions are large, single, eosinophilic, round to oval, and surrounded by a clear halo.

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