CTICasesIVC Filter Strut Fracture and Migration
Imaging findings
Abdominal CT demonstrates a Bard G2 Express inferior vena cava (IVC) filter with several struts perforating through the IVC wall into the retroperitoneal fat, causing localized mesenteric inflammation. Contrast-enhanced chest CT shows that one of the fractured struts has migrated superiorly, lodging within the mediastinal fat immediately adjacent to the right inferior pulmonary vein.
Key takeaways
IVC filter strut fracture and migration is a serious, late complication of retrievable IVC filters (such as the Bard G2 series). Perforation of the filter struts through the IVC wall can lead to fracture, allowing struts to migrate hematogenously to the heart, pulmonary arteries, or mediastinum. Long-term filter placement should be monitored, and retrieval should be performed as soon as clinically feasible.
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