Angiomyolipoma of the left ureterovesical junction.

Angiomyolipoma (AML) is a benign tumor that typically consists of 3 tissue elements: thick-walled blood vessels, smooth muscle cells, and adipocytes. The most common location for AML is renal; however, extrarenal AML has been described. Reports of extrarenal AML within the genitourinary tract are rare.

Formation of asymmetric unit membrane during urothelial differentiation.

Mammalian urothelium undergoes unique membrane specialization during terminal differentiation making numerous rigid-looking membrane plaques (0.3-0.5 micron diameter) that cover the apical cell surface.

Alterations in the p53 and MDM-2 genes are infrequent in clinically localized, stage B prostate adenocarcinomas.

Alterations in the p53 gene have been described in a variety of human malignant neoplasms. We have examined 29 stage B prostate carcinomas for alterations in the p53 gene and for amplification of the MDM-2 gene. No evidence of mutations in the conserved exons 5 to 8 was found by polymerase chain reaction single-stranded conformation polymorphism analysis and no accumulation of p53 protein was found by immunohistochemistry.

Clinically significant ureteral obstruction caused by inflammatory complications of severe pancreatitis.

Clinically significant ureteral obstruction caused by the inflammatory complications of severe pancreatitis is rare with only eight previously reported cases. We present two additional cases and review the world literature. Clinically significant ureteral obstruction can affect either or both ureters and present simultaneously with an episode of pancreatitis or months later.