[Thrombosis of the vena cava inferior. Etiological and clinical contribution].

On the basis of two observations of courses is demonstrated that not in the least only hypercoagulability and retardation of the movement of the blood but also contusions of the femoral and hip region by fall and thrown which first of all appear as harmless may become the starting-point for alterations of the venous wall with extended thromboses of the veins of leg and pelvis under inclusion of the infrarenal section of the lower vena cava with a distinct picture of the postthrombotic condition of the lower extremities and a threatening embolism of the lungs. The author deal with expert's problems of the restriction of the function conditioned by accident. For the collateral venous circulation in the thrombosis of the vena cava inferior several accessory ways are at disposal of which the superficial collateral veins of the abdominal wall have diagnostically a high valency, haemodynamically they are, however, only of little importance. In partial thrombosis in the region of the lower vena cava clinically evident collateral circulations may stay away due to good possibilities of compensation as it is proved at a postoperative complication of thrombosis by oligosymptomatology.