深静脉血栓形成(deep venous thrombosisDVT)是指血液在深静脉腔内不正常地凝结,阻塞静脉管腔,导致静脉回流障碍,造成不同程度慢性深静脉功能不全。全身主干静脉均可发病,常见的是下肢及下腔静脉血栓形成,尤其是髂-股静脉血栓形成,由于其可造成血栓后综合征(post-thrombosis sy Deep venous thrombosis (DVT) refers to the abnormal blood coagulation in the deep venous cavity, occlusion of the venous lumen, resulting in venous return disorder, resulting in varying degrees of chronic deep venous insufficiency. The main body of the common veins can be disease, common lower extremity and inferior vena cava thrombosis, especially iliac - femoral vein thrombosis, because it can cause post-thrombosis syndrome (post-thrombosis sy