第１例：左下腔静脉（老年女性，身长１．６０米）该例两侧骼总静脉及骼内静脉、髂外静脉均位于同名动脉的后方。左髂总静脉（长４０．０ｍｍ、外径１４．０ｍｍ）与右髂总静脉（长５０．０ｍｍ、外径２０．０ｍｍ）在第五腰椎左前方汇合形成下腔静脉。下腔静脉沿腹主动脉的左 Case 1: left inferior vena cava (elderly women, 1.60 meters in length) The cases on both sides of the total iliac vein and iliac vein, external iliac vein are located in the same name behind the artery. The left iliac vein (40.0 mm in length, 14.0 mm in outside diameter) and the common iliac artery (50.0 mm in length, 20.0 mm in outside diameter) merge into the left front of the fifth lumbar vertebra to form the inferior vena cava. The inferior vena cava is along the left aorta