Complications: 1/33 (3.0%) acute renal failure, 1/33 (3.0%) emergency renal failure due to Double-J obstruction on the solitary kidney, 1/33 (3.0%) renal colic caused by fragment stones causing ureteral obstruction, 2/33 (6.1%) bleeding without blood transfusions, 1/33 (3.0%) reaction fever.