Abstract
We report an unusual complication caused by urethral catheterization. During a routine urethral catheter change in a 38-yr-old woman, a 14-Fr Foley catheter was accidentally placed into the right ureter through the ureteral orifice. The position of the catheter was confirmed by retrograde urogram through urethral catheter. Percutaneous nephrostomy was performed with subsequent proper replacement of a urethral catheter. Two weeks later, the injured ureter had healed without leakage or obstruction.