Papiloma invertido de tracto urinario superior

Inverted papilloma of the upper urinary tract is a rare tumor and generally considered to be a benign. We present two case of benign ureteral inverted papiloma. They were discovered after to study a upper urinary infection and a gross hematuria respectively. Both cases appear to be associated with asynchronous and synchronous bladder carcinoma, so it is very important a strict follow- up.