[Angioleiomyoma of the ureter]

Angioleiomyoma of the urinary excretory tract is an unusual, but benign condition. A case of pure angioleiomyoma of the ureter is reported. Renal tract ultrasonography showed hydronephrosis on the right side in a 15-year-old boy without urinary symptoms. Subsequent retrograde biopsy suggested leiomyoma. Nephrureterectomy was performed. Histologically, the removed specimen indicated ureteral angioleiomyoma. Difficulties in diagnosis and surgical treatment are discussed.