A new technique to avoid suprarenal placement of Kimray-Greenfield filters: technical note.

A new technique that avoids suprarenal Greenfield filter placement was used in 2 patients with an inferior caval thrombus extending up to the renal veins. The caval thrombus was pulled down with the aid of a modified Dormia wire basket inserted via a transfemoral approach, while the Kimray-Greenfield filter was introduced from a transjugular approach and placed in an infrarenal position.