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Migration of Inferior Vena cava Filter into Renal Hilum

The use of intracaval devices has become popular in the prevention of primary and recurrent pulmonary emboli. The indication for placement of an IVC filter is a recurrent pulmonary thromboemboli despite adequate anticoagulation, or when there is a contraindication to anticoagulation [1, 2]. Early complications after IVC filter placement can occur at the time of insertion, e.g., filter deformation, filter fracture, and improper placement such as in the heart or in the renal, hepatic, iliac or spermatic veins [3-9]. Late complications include migration to higher levels of the IVC, right heart chambers, the pulmonary circulation, the renal, hepatic, intestinal, and iliac veins, or perforation into extra-vascular tissue, such as peritoneal cavity, biliary tree or retro-peritoneal space [3-7. 10, 11]. We report the case of a 51 -year-old man whose MobinUdin' IVC filter migrated to a location not previously described for this type of filter.