[Inverted papilloma of the upper urinary tract].

Inverted papilloma of the upper urinary tract is a rare tumor and generally considered to be a benign. We present two cases of benign ureteral inverted papilloma. 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.