[An urinary catheter slipped into the renal pelvis].

An elderly woman was referred to hospital because of fever and deterioration of her general condition. Due to urinary retention, the woman had undergone long term catheterization and had a urinary infection for years. In addition, the partial right hip prosthesis was found to be dislocated. While changing the catheter it slipped into the renal pelvis, and the balloon of the catheter was filled at the level of the ureteropelvic junction. The condition, observed in computed tomography scanning, was quickly restored, and the patient managed to avoid complications. Drifting of an urethral catheter into the upper urinary tract is a rare condition, but may lead to significant complications.