[Morphology of the inferior vena cava in the area of an antiembolic cava-filter implanted many years ago].

: A case of a 85 year old male who died of uremia is described. An antiembolic cava filter (AECF) implanted probably in the 1960s was found at the level of the kidney veins. Macroscopically, some parts of AECF penetrated through the wall of vena cava. Histologically, fibrous rods were thicker than the wall of the vein, were covered with endothelium and made the lumen of the vein narrow. Recanalization of the fibrous areas was observed. Filters of a new construction are deprived of negative aspects of the old ones.