Endovascular retrieval of an intraaortic greenfield vena cava filter.

Aberrant placement of vena cava filters has been documented. Only one case of intraaortic deployment, in which the filter was left at the aortic bifurcation with no adverse effects over a 4-year follow-up period, has been reported. We describe the endovascular retrieval of an intraaortic Greenfield filter using a snare and large sheath to protect the aortic intima from injury during removal of the device.