Jianyi Li1, Zhanglin Wang1, Chunlin Chen2, Ping Liu3, Hui Duan4, Lan Chen4, Jianping Wang5, Huanqing Tan5, Pengfei Li4, Chunmei Zhao4, Xiangxue Kong1, Lei Tang1. 1. Department of Anatomy, Guangdong Province Key Laboratory of Medical Biomechanics, School of Basic Medicine Science, Southern Medical University, Guangzhou 510515, China. 2. Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. Electronic address: jieru@163.com. 3. Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. Electronic address: lpivy@126.com. 4. Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. 5. Department of Radiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
Abstract
OBJECTIVES: To investigate the distribution of iliac veins posterior to common iliac artery bifurcation (CIAB) for pelvic lymphadenectomy. METHODS: After IRB approval was obtained, computer tomography angiography data of 442 female pelvises were acquired. After vascular three-dimensional (3D) reconstructions, the structural types, frequencies and diameters of iliac veins immediately posterior to CIAB were investigated and measured. To quantify iliac vein courses, linear distances and their distances on sagittal, coronal and vertical axes from CIAB to external/internal iliac veins confluence (EIIVC) were geometrically measured. RESULTS: There were five structural types of iliac veins distribution immediately posterior to CIAB: common iliac vein (CIV, 13.8%), no occurrence of great vein (N, 71.27%, 0), EIIVC (1.58%) and external iliac vein (EIV, 13.35%) on the left side, while confluence of common iliac veins (CCIV, 8.82%), CIV (77.38%), N (1.58%, 0), EIIVC (6.11%), and EIV (6.11%) on right. The venous diameters immediately posterior to CIAB in "CCIV", "CIV" and "EIIVC" were significantly larger than that in "EIV" (P<0.05). Their linear distances and their distances on each axis from CIAB to external/internal iliac veins confluence (EIIVC) from CIAB to EIIVC were obtained. CONCLUSIONS: In this study, we presented new distribution of iliac veins posterior to CIAB, including structural types, frequencies, venous diameters immediately posterior to CIAB, and their quantified courses from CIAB to EIIVC. It could help surgeons reduce the risk of vascular injury, hemorrhage or transfusion in pelvic lymphadenectomy.
OBJECTIVES: To investigate the distribution of iliac veins posterior to common iliac artery bifurcation (CIAB) for pelvic lymphadenectomy. METHODS: After IRB approval was obtained, computer tomography angiography data of 442 female pelvises were acquired. After vascular three-dimensional (3D) reconstructions, the structural types, frequencies and diameters of iliac veins immediately posterior to CIAB were investigated and measured. To quantify iliac vein courses, linear distances and their distances on sagittal, coronal and vertical axes from CIAB to external/internal iliac veins confluence (EIIVC) were geometrically measured. RESULTS: There were five structural types of iliac veins distribution immediately posterior to CIAB: common iliac vein (CIV, 13.8%), no occurrence of great vein (N, 71.27%, 0), EIIVC (1.58%) and external iliac vein (EIV, 13.35%) on the left side, while confluence of common iliac veins (CCIV, 8.82%), CIV (77.38%), N (1.58%, 0), EIIVC (6.11%), and EIV (6.11%) on right. The venous diameters immediately posterior to CIAB in "CCIV", "CIV" and "EIIVC" were significantly larger than that in "EIV" (P<0.05). Their linear distances and their distances on each axis from CIAB to external/internal iliac veins confluence (EIIVC) from CIAB to EIIVC were obtained. CONCLUSIONS: In this study, we presented new distribution of iliac veins posterior to CIAB, including structural types, frequencies, venous diameters immediately posterior to CIAB, and their quantified courses from CIAB to EIIVC. It could help surgeons reduce the risk of vascular injury, hemorrhage or transfusion in pelvic lymphadenectomy.