Renal arterial injury associated with percutaneous nephrostomy.

A case of pseudoaneurysm and subcapsular hematoma as a complication of a percutaneous nephrostomy with unusual clinical findings is presented. Bleeding following a closed nephrostomy must be kept in mind as a potential hazard. Computerized tomography (CT) examination should be performed in such cases using intravenous radiographic contrast material whenever possible to identify the potential bleeding site rapidly.