Inferior Vena Cava Filter Resulting in Perforation and Massive Retroperitoneal Hematoma Presenting as Acute Onset of Lower Extremity Weakness.

Perforation of inferior vena cava (IVC) filter struts is a common incidental finding on postoperative computed tomography (CT) scans that is not associated with bleeding or major complications. However, in rare circumstances, it can be associated with hemorrhage requiring immediate removal. We present a case of a 62-year-old man who developed abdominal pain and right lower extremity weakness 2 weeks after treatment of a pulmonary embolism with IVC filter placement and anticoagulation. A CT scan revealed a large right-sided retroperitoneal hematoma with active extravasation from the IVC filter struts that had perforated the IVC wall. He underwent a hybrid operation with endovascular retrieval of the IVC filter and concomitant IVC primary repair combined with evacuation of the hematoma, causing nerve compression. Postoperatively, he regained normal sensory and motor function. Perforation of IVC filter struts is usually asymptomatic, but in rare circumstances, it can cause hemorrhage requiring immediate removal and IVC repair. Surgical intervention is indicated in the setting of a large hematoma with nerve or vessel compression and may require a combined endovascular and open approach.

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