[Late diagnosis of thrombosis of the pelvic, femoral or calf veins (author's transl)].

The time interval which elapses from the occurrence to the diagnosis of thrombosis of the pelvic, femoral or calf veins was investigated in a retrospective study. As could be shown from the histories of 66 patients with phlebographically documented localization and extent of the thrombosis, in 85% of the cases the correct diagnosis was only made past the 7th day following the presumptive beginning of the thrombotic process, i.e. at a time when the period optimal for a fibrinolytic or surgical treatment had already passed. J-fibronogen-method in patients with an increased risk for thrombotic complications is recommended.