Benign Diseases Associated with Human Papillomavirus Infection 153 The epithelium may be squamous and/or respiratory in nature order 15 gr differin with visa, and mitotic ﬁgures should not be prominent generic differin 15 gr without a prescription. Less than 10 % of inverted papillomas display dysplasia generic differin 15gr amex, which should alert the pathologist to look carefully for invasion. It may bear some resemblance to the verruca vulgaris (which can occur in the nasal cavity), but on histopathologic examination, it is an exophytic lesion with a non-keratinized surface that includes mucous cells and transitional epithelium. The oncocytic papilloma may combine exophytic and endophytic growth patterns, but the epithelium is distinctive. It is composed of mitochondria-rich oncocytes that are tall, columnar, and sometimes ciliated. Neutrophilic microabscesses and mucin cysts may also be present in the epithelium. Care should be taken to remove all of the lesions during the ﬁrst surgery in order to minimize the risk of recurrence. Speciﬁc surgical techniques can be employed based on the extent and location of the lesions (Anari and Carrie 2010). Recurrence is a major concern, but precise rates are difﬁcult to determine and vary widely (Mirza et al. Most recurrences appear in the ﬁrst 2–3 years after initial surgical treatment with an incidence of 5–50 % depending on the amount of disease and adequacy of initial tumor removal (Anari and Carrie 2010; Mirza et al. Vigilant postoperative surveillance is recommended to detect any early recurrence. These entities are very rare, and, with the possible exception of epidermodysplasia verruciformis, there is a dearth of infor- mation regarding their pathogenesis. The primary concern is malignant transformation, usually occurring on sun-exposed areas of the skin in about half of affected individuals beginning in the fourth or ﬁfth decade of life (Rogers et al. Benign lesions exhibit irregular distribution of keratohyaline granules in the upper levels of the epithelium along with clear changes in suprabasal cells. When malignant transformation occurs, these somewhat distinctive changes are lost, and the microscopic appearance is Bowenoid, with marked dyskeratosis and pleomor- phism (Majewski and Jablonska 1997). There are case reports of Netherton syndrome patients with papillomatous skin lesions and cutaneous malignancies (Folster-Holst et al. It is a migratory annular skin rash, with a “serpiginous overlying double- edged scale” (Sun and Linden 2006). The “bamboo hair” of Netherton patients is often thin and fragile, breaking within a few centimeters of the scalp. This is a necessary ﬁnding for the diagnosis of Netherton syndrome (Sun and Linden 2006). Many Netherton patients also experience an atopic diathesis with allergic rhinitis, asthma, angioedema, dermatitis, and other manifestations (Sun and Linden 2006). In addition to the three major clinical signs previously mentioned, non- cutaneous ﬁndings such as physical and mental retardation, chronic enteropathy with failure to thrive, recurrent infections, aminoaciduria, and anaphylactoid reactions to certain foods have been described (Folster-Holst¨ et al. The epidermis is usually psoriasiform, “with acanthosis, hypergranulosis, and occasionally, spongiosis progressing to microvesiculation” (Sun and Linden 2006). Trichorrhexis invaginata is especially distinctive under light microscopy, with torsion and invagination nodules that may exhibit intussusception of the proximal nodule over the distal (Sun and Linden 2006) 156 S. Recurrent infections should be treated with antimicrobials directed at the cultured organisms. Approximately 79 % of them initially presented with warts, 90 % with hypogammaglobulinemia, and 92 % with neutropenia (Kawai and Malech 2009). They noted that all patients from early childhood suffered from a wide variety of recurrent bacterial infections due to neutropenia, B cell lymphopenia, and hypogammaglobulinemia (Kawai and Malech 2009). If this is accompanied by neutrope- nia, lymphopenia, and hypogammaglobulinemia, a biopsy should be performed. Mortality and morbidity due to infection is apparently low in closely-followed patients, but premature death due to overwhelming infections and carcinomas has been reported (Kawai and Malech 2009). The potential for wide- spread lesions appears to be increased in patients with immunodeﬁciencies. Arch Dermatol Res 279 Suppl:S66–72 Ritzkowsky A, Weissenborn S, Krieg T, Pﬁster H, Wieland U (2001) Extensive human papillo- mavirus type 7-associated orofacial warts in an immunocompetent patient. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 102: 431–432 Henquet C (2011) Anogenital malignancies and pre-malignancies. Surv Ophthalmol 49:3–24 Sen S, Sharma A, Panda A (2007) Immunohistochemical localization of human papilloma virus in conjunctival neoplasias: a retrospective study. Indian J Ophthalmol 55:361–363 Hall C, McCullogh M, Angel C, Manton D (2010) Multifocal epithelial hyperplasia: a case report of a family of Somalian descent living in Australia. Mod Pathol 15:279–297 Eggers G, Muhling¨ J, Hassfeld S (2007) Inverted papilloma of paranasal sinuses. J Craniomaxillofac Surg 35:21–29 Anari S, Carrie S (2010) Sinonasal inverted papilloma: narrative review. Otolaryngol Clin North Am 39:619–37, x–xi Sauter A, Matharu R, Hormann¨ K, Naim R (2007) Current advances in the basic research and clinical management of sinonasal inverted papilloma (review). J Am Acad Dermatol 60:315–320 Gewirtzman A, Bartlett B, Tyring S (2008) Epidermodysplasia verruciformis and human papil- loma virus. South Med J 96:613–615 Majewski S, Jablonska S (1997) Human papillomavirus-associated tumors of the skin and mucosa. Int J Dermatol 45:693–697 Folster-Holst R, Swensson O, Stockﬂeth E, Monig H, Mrowietz U, Christophers E (1999) Comel-¨ ¨ ` Netherton syndrome complicated by papillomatous skin lesions containing human papillomaviruses 51 and 52 and plane warts containing human papillomavirus 16. Arch Dermatol 146:69–73 Yanagi T, Shibaki A, Tsuji-Abe Y, Yokota K, Shimizu H (2006) Epidermodysplasia verruciformis and generalized verrucosis: the same disease? Clin Exp Dermatol 31:390–393 M alignant Diseases Associated with Human Papillomavirus Infection Herve Y. For each site, the epidemiology, clinical features, diagnosis, treatment, and prognosis are examined. This is supported by scientiﬁc research that was conducted decades ago (Reid et al. Cervical cancer is believed to evolve from cervical dysplastic lesions of escalating grades (Leung et al. Types 16 and 18 are generally acknowledged to cause about 70 % of cervical cancer cases. Preventive programs of repeated Malignant Diseases Associated with Human Papillomavirus Infection 165 cytological examination screening (Papanicolaou test, commonly known as the Pap test) have been credited with reducing cervical cancer mortality by more than 50 % (Shield et al. Human papillomavirus types 16 and/or 18 prevalence world- wide in women with normal cervical tissues at screening is estimated by the World Health Organization at 3. There is evidence that in North America, progression to invasive disease is often because of a lack of screening rather than screening failure (Spayne et al. More advanced disease is often addressed with removal of the cervix, cervix and uterus (hysterectomy), radiation therapy and/or chemotherapy (usually cisplatin).
The whole spectrum of natural disease associated with sudden death is discussed in Chapter 3 purchase generic differin on-line. Medicolegal Investigative Systems 9 The Coroner System There are two general types of medicolegal investigative systems in the United States: coroner systems and medical examiner systems order differin in united states online. As of 2000 cheap differin 15gr online, 12 states had coroner systems; 19 states had state medical examiner systems; 3 states had county or regional medical examiner’s ofﬁces but no coroner’s ofﬁces; and 16 had a mixture of medical examiner and coroner systems. Coroner systems, however, still make up a signiﬁcant proportion of the medicolegal coverage of the American population. The coroner system, dating back to feudal England, is the older of the two medicolegal systems. He then makes rulings as to the cause and manner of death in cases that fall under the coroner law. As a general rule, these cases constitute violent deaths, sudden and/or unexpected deaths, suspicious deaths, and cases in which a physician is not in attendance at the time of death. In making a ruling, the coroner is not required to consult a physician for advice, may or may not order an autopsy, and may or may not rule in agreement with autopsy ﬁndings if one is performed. The training the cor- oner receives for the position can range from absolutely none to a few hours or to 1–2 weeks. Based on this training — or lack of it — the coroner makes decisions as to cause and manner of death that may have signiﬁcant criminal and civil consequences. In some areas of the country, this system has been modiﬁed such that the coroner must be a physician, though not necessarily a pathologist. We now have physicians making decisions in a medical ﬁeld usually having absolutely nothing to do with their areas of expertise. Thus, we have the obstetrician-coroner, the general prac- titioner-coroner, and so on. Occasionally, by chance, the coroner is a pathol- ogist, though almost never a forensic pathologist. Most people do not realize that exposure to forensic pathology in most general pathology training programs ranges from nonexistent to a few hours of instruction, or occasionally a short (2–4 weeks) rotation through a medicolegal system. Thus, certiﬁcation as an anatomical (general) pathol- ogist does not necessarily mean that an individual knows any forensic pathology. Physicians practicing outside their ﬁelds of specialty or with such minimal training as possessed by the physician-coroner would ordi- narily be open to malpractice lawsuits and condemnation by the public, colleagues, and especially the legal community. The coroner-physician, however, 10 Forensic Pathology works for a governmental organization that either does not care or know about qualiﬁcations for this work. Thus, a deputy sheriff might kill a civilian and his boss, the sheriff, rules as to the cause and manner of death. The sheriff acting as the coroner thus makes rulings as to the cause of death of inmates dying in his jail. Obviously, to anyone but the California legislature, there is a conﬂict between having a single organization whose duties are to both enforce laws and make arrests and to conduct objective investigation of death in which rulings may impeach or conﬂict with the other half of the organization. The coroner- funeral director makes a livelihood by conducting funerals, not by being a coroner. Some unscrupulous coroners are more interested in obtaining a family’s permission to conduct the funeral than to make a ruling as to cause and manner of death. They may take great care not to make a ruling as to cause and manner of death that might offend a family and thus cost them business or potential votes in the next election. The coroner system was developed at a time when the lay public knew as much about the science of medicine as the physicians practicing it. Specialized knowledge is necessary not only to practice med- icine in general, but to practice any of its numerous subspecialties. Thus, a dermatologist would not consider doing neurosurgery, nor would a neuro- surgeon practice obstetrics/gynecology. Neither average hospital pathologists nor physicians who are not pathologists can adequately practice in this ﬁeld no matter how well intentioned they are — and they are often very well intentioned. Some non-forensic pathologists claim that any anatomical pathologist with a basic knowledge of pathology can handle 85% of medical examiner cases, with the remaining 15% needing a forensic pathologist in a fully equipped medicolegal facility. Therefore, only a small corps of experi- enced forensic pathologists is needed, to which the difﬁcult 15% of cases can be referred. Even accepting this somewhat dubious premise, the problem is how does one know ahead of time which of the cases are the 15% needing the forensic pathologist and the fully equipped medical examiner’s ofﬁce? One never knows when the simplest autopsy will turn out to be a complicated case with the most extreme repercussions. A witnessed “automobile accident” turned out, at autopsy, to be a capital homicide involving an armed robbery. A simple carbon monoxide Medicolegal Investigative Systems 11 suicide in a garage eventually ended up with a million-dollar lawsuit and involved the ﬂying characteristics of light planes. A simple case of sudden death in infancy ended up as the ﬁnal death in a decades-long chain of infanticide. The Medical Examiner System The medical examiner system was ﬁrst introduced in the United States in 1877 in Massachusetts. The state was divided into a number of sectors, within each of which was designated a physician who functioned as a “medical examiner” to determine the cause and manner of death. It was only in the 1980s that a true State Medical Examiner System was established in Massachusetts. The ﬁrst true medical examiner system came into existence in 1918 in New York City. The system described the type of cases that fell under the Medical Examiner Law; it stated that the medical examiner could perform autopsies in cases that he felt needed them, and it established a laboratory for his use. The cases that fell under the medical examiner system were violent deaths (accidents, suicides, homicides), suspicious deaths, sudden, unexpected deaths, and deaths occurring without the attendance of a physician. Most medical examiner systems in this country are variations of the original New York concept. Some of the newer systems specify that the chief medical examiner must be a forensic pathologist. The creation of a medical examiner system does not necessarily mean that a community actually has a functioning or effective medical examiner system, nor does the fact that it once had one guarantee that it will continue to operate in an effective manner. Thus, by the mid 1980s, the New York City Medical Examiner System had been seriously damaged in its functioning by a change in the law that allowed families to prevent the performance of autopsies in cases in which the manner of death did not appear to be homi- cide; that is, the forensic pathologist had authority to perform an autopsy only in cases that were obviously homicide. Unfortunately, it is not always possible to recognize a homicide until an autopsy is performed. In addition, without an autopsy, an accurate cause of death, the presence and extent of disease or injury, the incapacitation 12 Forensic Pathology produced by them, and knowledge of whether there was any pain or suffering involved in an injury (an important question in civil cases) become sheer speculation. Some legislatures have created medical examiner’s ofﬁces and have not funded them adequately. In other instances, the ofﬁces are placed under state government agencies that should not be supervising the medical examiner’s ofﬁce. The medical examiner’s ofﬁce wants to determine the cause and manner of death, independent of who did what. One of the most controversial types of death is that of a civilian killed by police. By virtue of being a subdivision of a police agency, the impartiality of the medical examiner’s ofﬁce in such cases is open to serious question.
For giant omphalocele buy differin in india, sclerosing solutions (silver sulfasalazine generic differin 15gr with visa, tincture of mercurochrome) are applied to cause epithelialization purchase differin 15 gr visa. Months to years later the ventral hernia can be closed without undue respiratory or bowel compromise. Alternatively compression wraps applied around the abdomen work to reduce bowel content over a period of months. The remaining fascial defect decreases in size until it resembles an umbilical hernia, which may close spontaneously or require later minor surgical closure. In cases where the bowel can be primarily reduced, the remnant umbilical cord is used as a biological dressing over the defect, and a large plastic dressing is applied (e. The defect closes spontaneously over the ensuing weeks, and reepithelialization occurs, as bowel function returns. After the bowel is reduced completely, a plastic dressing with absorbant nonstick gauze is applied, and spontaneous closure ensues. Cosmetic results are typically superior to suture closure, and there is never a concern for high ventilatory pressures. The large exposed surface area of abdominal contents allows substantial evaporative heat and fluid losses. Mhamane R, Dave N, Garasia M: Delayed primary repair of giant pmphalocele: anesthesia challenges. Sandler A, Lawrence J, Meehan J, et al: A “plastic” sutureless abdominal wall closure in gastroschisis. It produces functional obstruction because the involved bowel is tonically contracted. The “transition zone” to ganglionic bowel occurs in the distal colon in 80% of cases; in 10%, it occurs in the small bowel. Sx range from mild-to-severe constipation, sometimes complicated by toxic enterocolitis. Today, classic three-stage operations are being reduced to one or two stages, often assisted by laparoscopy. C: Circumferential incision in rectal mucosa 5–10 mm cephalad to the pectinate line. D: Mucosal traction sutures to facilitate further dissection from rectal muscular cuff. E: Transanal submucosal dissection is continued cephalad to meet the caudal extent of the transperitoneal rectal dissection. G: Rectal muscular cuff is split posteriorly to accommodate the pull-through segment (segment is not shown here). H: Rectum and sigmoid colon are pulled through the rectal muscular cuff to the anastomotic sites. I: Colon is transected at appropriate site with confirmation of ganglion cells by frozen s e c t i o n. Standard surgical approach in a neonatally diagnosed Hirschsprung’s disease is now a one-stage neonatal repair, using a Soave or Swenson procedure, which avoids a colostomy and may be performed via a circumanal incision. Laparoscopy or umbilical incision is used to biopsy the colon to determine the transition zone. Once ganglionated bowel is identified on frozen section, it is pulled down to the anus by the transanal approach. Subsequent definitive repair is performed when the child is larger in one stage (or two if a protective proximal stoma needs subsequent closure). Positioning depends on the approach chosen; some surgeons prefer a lower body antibacterial preparation, others position the child in lithotomy position and prepare the abdomen and perineum. Positioning neonates transversely across an operating table rotated 90° affords good surgical access to the perineum and anesthesia access to the head. Significant bleeding is infrequent; operative time often is determined by the delay for frozen sections, which are challenging for most pediatric pathologists. This is a significantly faster procedure, followed by permanent sections on which ganglia are more easily identified; it is inadequate in 10–20% of “long-segment” patients. Usually the rectum terminates as a “fistula” entering the perineum or pelvic structures anterior to the external anal sphincter. If the fistula terminates on the perineum, it is called a “perineal fistula” or “anterior anus. Fistulas to the vagina or uterus are rare; when they occur, they may be in conjunction with urethral anomalies. This combined structure—including rectum, vagina, and urethra—is called a “cloaca. Definitive repair of high lesions occurs after several months following contrast studies. If the fistula is high, it occasionally will be necessary to turn the patient over for abdominal mobilization of the sigmoid colon. High lesions are also amenable to early laparoscopic mobilization and pull-through. This can be done with low fistulas as well, but dissection of the common wall between the urethra and fistula must be performed with care. Children with rectal or anal agenesis without fistula will have had colostomies in newborn period. Most pediatric hernias are indirect; they occur when the processus vaginalis (a small pouch of peritoneum dragged down to the scrotum during gonadal descent) fails to obliterate. Infants, particularly the premature, are more likely than toddlers to develop bilateral and incarcerated hernias. Hydroceles are identical to hernias in origin but have a smaller neck and derive their name because this neck is so small that only intraperitoneal fluid, not bowel, can pass through it. Hydroceles tend to close spontaneously (~80%) during the first 2 yr of life; those that fail to resolve are repaired at ~2 yr. Umbilical hernias have a tendency to close over the first 5 yr of life (~95%), and are repaired when large (> 2 cm) or persistent. Complications of hernia/hydrocele repair include damage to the vas deferens or testicular vessels, metachronous contras-lateral hernias (~10%) if just one side is repaired initially, and a very low incidence of infertility when bilateral repairs are undertaken. Bleeding, if any, is minor, recurrence uncommon (≤ 1%), and bowel resection is rarely necessary, even when a hernia is incarcerated. Overnight admission for apnea monitoring is suggested in premature children (≤ 54–60 wk corrected age). Surgical approach: Inguinal hernias and hydroceles are repaired through a lower- lateral abdominal skin crease incision (more recently, laparoscopically), permitting separation of the sac from spermatic cord structures, followed by high ligation ± distal fenestration (in hydroceles). Umbilical hernia repair is performed through a transverse incision in the infraumbilical skin fold, through which the sac is resected from the undersurface of the skin and healthy fascial edges closed. Postop apnea can occur in infants ≤ 60 wk postconceptual age, particularly if the infant was premature, has neurologic disease, anemia, or required intensive care in the early neonatal period. Testicles begin fetal life just inferior to the kidney and, through differential growth, migrate to the base of the ipsilateral hemiscrotum, attached there by the gubernaculum. Problems occur when testicular descent does not occur, occurs partially, or occurs incorrectly.
By W. Givess. Boise State University.