Acquired cystic disease associated renal cell carcinoma: A clinicopathologic and molecular study of 31 tumors.

Acquired cystic disease associated renal cell carcinomas (ACD-RCC) are rare and their molecular and histopathological characteristics are still being explored. We therefore investigated the clinicopathologic and molecular characteristics of 31 tumors. The patients were predominantly male (n = 30), with tumors mainly left-sided (n = 17), unifocal (n = 19), and unilateral (n = 29) and a mean tumor size of 25 mm (range, 3-65 mm).

Aggressive angiomyxoma of male genital region. Report of 4 cases with immunohistochemical evaluation including hormone receptor status.

Aggressive angiomyxoma (AA), first described by Steeper and Rosai (Am J SurgPathol. 1983;7:463-475), is a rare locally infiltrative tumor that usually arises in the pelvic and perineal soft tissues of young women. Approximately 150 cases have been reported in women.