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[A rare complication of the Greenfield vena cava filter].

The authors report an unusual case of retroperitoneal haemorrhage following the application of a Greenfield modified titanium filter: haematoma due to the lesion of a lumbar vein was favoured by anticoagulant therapy and complicated by infection, ending in frank disruption of the vein wall. A review is made of the modalities of caval penetration and perforation with the Greenfield filter.