Passage of embolization coil through urinary collecting system one year after embolization.

Vascular injury is an uncommon, but serious, complication of percutaneous nephrolithotomy. Hyperselective angioembolization is an effective means of managing this complication with few reported adverse sequelae. We report a case in which an embolization coil placed after renal hemorrhage subsequently eroded into the collecting system more than 1 year postoperatively and was passed through the patient's urinary tract.