Quadruple Renal Neoplasia: Bilateral Renal Tumors of Dissimilar Histogenesis

Abstract
Separate renal neoplasms [4] were removed from a 64 yr old man during a period of 8 mo. A lesion was 1st identified in the left kidney and the nephrectomy specimen had 2 separate adenocarcinomas. A 3rd adenocarcinoma and a papillary urothelial pelvic carcinoma were found subsequently and segmentally resected from the right kidney. The patient died 9 yr later with local recurrence of the urothelial neoplasm but no evidence of metastatic carcinoma.