Inverted Papilloma of the Bladder Associated with Transitional Cell Carcinoma of the Renal Pelvis

Abstract

Inverted papilloma is a rare benign urothelial tumor located mostly in the bladder neck or trigone. Recently, it has been regarded as a neoplasm with low malignant potential. Although a few reports have associated with concomitant transitional cell carcinoma, the association of bladder inverted papilloma and renal pelvic transitional cell carcinoma is very rare with only one case report in the literature. We report on a 72-year-old man with bladder inverted papilloma associated with left renal pelvic transitional cell carcinoma who remained free of recurrence for 1 year after surgery.