临床实践证明,左侧下肢静脉血栓形成的发病率比右下肢高数倍。其原因多有异议,一般认为左髂总静脉受压及其静脉内结构形成,使下肢血液回流缓慢,是其发病率较高的原因。然而国内迄今尚缺乏有关的形态学报告,本文调查了国人这些静脉内结构的型式及其出现率,以探讨左下肢血栓形成高于右下肢的形态学依 Clinical practice shows that the incidence of left lower limb venous thrombosis higher than the right lower limb several times. The reason for many objections, the general impression that the left iliac vein compression and its intravenous structure, so that lower extremity blood reflux is slow, is the reason for the higher incidence. However, so far, the morphological report is still lacking in our country. This paper investigates the types and incidences of these intravenous structures in Chinese people in order to investigate the morphological characteristics of left lower extremity thrombosis