Surgical features of diagnosis and treatment of internal ureteral fistula after a gynecologic operation

The work dwells on a rare case of a late complication of a gynecological operation: internal urethral fistula with a giant retroperitoneal extravasation of urine up to 2 liters. The diagnostic was complicated by the size of the fistula and its localization in the lower third of the right ureter. The diagnosis was made on the basis of ultrasonic examination, CT and urethroscopy. The treatment also had its own characteristics and consisted of two stages: opening and drainage of the extravasation of urine and ureterocystoneoanastomosis. Long-term results were satisfactorily and were observed for up to 5 years.