[Ureteritis cystica diagnosed by biopsy under a ureteroscope: a case report]

We report a case diagnosed as ureteritis cystica by ureteroscopic examination. A 65-year-old female was admitted to our hospital for a thorough examination of anasarca and reduction of renal function. Computerized tomography showed atrophy in the right kidney and hydronephrosis in the left kidney. Nephrostomy was performed and antegrade pyelography showed ureteral stenosis. For the purpose of accurate diagnosis of ureteral stenosis, ureteroscopy and biopsy were performed. Histological examination revealed ureteritis cystica. Fifty-five cases including this case, reported in Japan, are herein reviewed.