Abstract:

Objective To discuss the left renal vein anatomy at multi-detector row CT and the implicationsfor living renal transplantation. Methods The left renal vein anatomy and the branches in 79 living renal transplantation donors who underwent contrast-enhanced CT angiography were analyzed retrospectively in this study. Maximum intensity projection, curve planar reformation and volume renderings were used for displaying the left renalvein anatomy. Anomalies of left renal vein and branches were recorded and classified. Results Left renal veinswere all visualized on late arterial and venous phase CT images in all subjects. There were one case of circumaortic renal vein（n ＝ 1）and one case of left inferior vena cava（n ＝ 1）. 0 or 1 adrenal vein，0 to 2 lumbar veins and 0 to2 gonadal veins were found in each donor. Conclusion Among the left renal vein branches, the number of lumbar vein varied more frequently，multiple gonadal veins were detected in some subjects. Left renal vein branches shouldbe handled carefully to avoid massive haemorrhage in left nephrectomy.

摘要：

目的 探讨左肾静脉解剖变异及其属支在多层螺旋 CT 中的表现及其对活体肾移植的意义。方法 回顾性分析 79 例行多层螺旋 CT 增强的肾移植供者左肾静脉的解剖结构及汇入左肾静脉的属支情况。采用最大密度投影、曲面重组和容积再现后处理技术，总结左肾静脉解剖变异及属支情况并分类讨论。结果 多层螺旋 CT 动脉晚期和静脉期图像均显示左肾静脉主干，发现环主动脉左肾静脉解剖变异 1 例，左侧下腔静脉 1 例。每例供者发现肾上腺静脉 0 ～ 1 根，腰静脉 0 ～ 2 根，生殖静脉 0 ～ 2 根。结论 左肾静脉属支中，腰静脉数目变异较多，生殖静脉肾有时会出现多根。在左肾切除术中要仔细处理静脉属支，避免大出血的发生。