[A case of fibroepithelial ureteral polyp in an adult patient].

A 24-year-old man complaining of asymptomatic gross hematuria was referred to our hospital for treatment of bilateral hydronephroses (left > right) diagnosed at a previous clinic. Radiological examinations demonstrated a filling defect at the left uretero-pelvic junction. Cytological examination of the urine was negative. With the diagnosis of suspected benign ureteral polyp, the patient underwent endoscopic-assisted partial ureterectomy and pyeloplasty through a 5 cm flank incision. Histological examination revealed that the villous tumor in the ureter was a fibroepithelial polyp.