Penetration of the wall of an abdominal aortic aneurysm by a Greenfield filter prong: a late complication.

This is a case report of a 68-year-old woman in whom a late and previously unreported complication developed that resulted from penetration of an aortic aneurysm by the prong of a stainless steel Greenfield filter. This complication came into view 7 years after placement of the filter, at the time of aneurysm resection. Enlargement of the aneurysm had occurred at a rapid rate. The patient was symptom free before surgery.