Deep venous thrombosis in duplicated superficial femoral veins.

摘要

The human vein system has a complex embryology which causes frequent anatomic variations [1]. As a result of vascular x-ray and surgery, in which the vascular tree can be observed, it has been demonstrated that only 1/6 patients are exempt of these anomalies. One of the most common is the duplicity of the superficial femoral vein [2,3].This duplicity favours the vein thrombosis in one of its branches with special clinical features such as the absence of symptoms in the affected limb and the early triggering of a pulmonary embolism. The diagnosis of thrombosis in the duplicated superficial femoral veins is difficult using the standard techniques such as compression ultra-sonography with Doppler [4-7] depending to a large extent on the radiologist's experience. The duration of anticoagulation in these patients poses a problem due to the persistence of this risk factor.