Endovascular Retrieval of Intracaval Cement: A Fishing Net Technique

To describe a novel endovascular technique for intracaval cement retrieval after spinal surgery.

We produced a replica of the intracaval cement fragment and a 3D print to plan the endovascular procedure. A woven caval filter was modified with two drawstring sutures to be used as fishing net. We used a 10F sheath in the right internal jugular vein to place the caval filter proximal to the floating fragment, and a 24F sheath in the right femoral vein was the working access. After the deployment of the caval filter, the following steps were performed through the 24F sheath: (A) The drawstring sutures were snared and retrieved to the skin surface in the groin; (B) the fragment was secured with two snare catheters from the femoral access and one through the lumen of the caval filter; (C) the fragment was broken off with a snared guide wire at the base; (D) the smallest fragment was removed directly with the snare; (E) the larger dislodged fragment was controlled within the periprocedural caval filter by tightening the drawstring and removed through the 24F sheath.

Cement fragments located in the inferior vena cava after cement-augmented spinal surgery procedures can be safely removed by the described fishing net technique.