C M Wilcox — Page 8 | PubMed Health

PubMedDate not supplied

Hepatobiliary diseases in patients with AIDS: focus on AIDS cholangiopathy and gallbladder disease.

Diseases of the biliary tree and gallbladder are being described with increasing frequency among patients with the acquired immunodeficiency syndrome (AIDS). Despite the profound immunosuppressive therapy transplant recipients receive, these patients do not appear to be affected by these disorders; thus, human immunodeficiency virus (HIV)-infected patients appear to be uniquely susceptible. Most HIV-infected patients that develop cholangiopathy have severe immunodeficiency with CD4 lymphocyte counts <200/mm3. The objective of this review is to summarize the available literature on AIDS-cholangiopathy, focusing on its diagnosis and classification and to suggest an approach for its evaluation and its management.

AIDS-Related Opportunistic Infections↗

PubMedDate not supplied

Polyvinylpyrrolidone storage disease: a source of error in the diagnosis of signet ring cell gastric adenocarcinoma.

False-positive and false-negative diagnoses of cancer seldom occur during evaluation of gastric mucosal biopsy specimens obtained during flexible fiberoptic endoscopy of the stomach. When they do occur, false-negative diagnoses are usually the result of undersampling of the lesion, whereas false-positive diagnoses are the result of overinterpretation of benign histologic lesions. The diagnosis of diffuse signet ring cell adenocarcinoma is associated with both false-positive and false-negative diagnoses of cancer. The signet ring cell can be easily overlooked. Mucicarminophilic cells can be overinterpreted as diffuse signet ring cell adenocarcinoma. Polyvinylpyrrolidone is an unusual cause of this type of false-positive diagnosis of gastric adenocarcinoma. Judicious use of histochemical stains, immunohistochemistry, and electron microscopy plays a significant role in avoiding the false-positive diagnosis of diffuse signet ring cell adenocarcinoma.

Biopsy↗