Perforation of the inferior vena cava by a recently inserted Greenfield filter.

The Greenfield filter is an effective device which provides protection against emboli to the lungs from the deep veins of the lower half of the body. Specific complications, such as perforation, may occur following the placement of caval filters. We report a case of inferior vena cava perforation by a Greenfield filter diagnosed at the time of surgery. With the increasing use of caval filter placement, specific complications such as this will be encountered.