title: Misplacement of a vena cava filter in the retroperitoneum.
abstract: An inferior vena cava filter was misplaced into the pericaval retroperitoneum. This was probably secondary to placement into and avulsion of the right spermatic vein. The filter delivery system was modified, and such misplacement should now be impossible.
mesh_terms: D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000517:prevention & control; D012187:Retroperitoneal Space; D014682:Vena Cava, Inferior