A Rare Concurrence: Villous Adenoma and Non-invasive Urothelial Carcinoma of the Bladder

Özet

Villous adenoma appearing in the urinary system is very rare. This tumor is common in the gastrointestinal tract and, as far as we know, villous adenoma of the gastrointestinal tract is premalignant. However, there is insufficient evidence about the malignancy potential of villous adenoma seen in the urinary tract and inadequate information about follow-up procedures. The aim of this report was to highlight a rare but important lesion: villous adenoma presenting with non-invasive urothelial carcinoma in the bladder.