Satyapal K S
Department of Anatomy, University of Durban-Westville, South Africa.
J Anat. 1995 Apr;186 ( Pt 2)(Pt 2):329-33.
Variations in the drainage patterns of the renal veins are well described, but existing classifications of the renal veins have deficiencies. This study aimed to formulate a practical classification of their drainage patterns, taking into consideration the number of primary tributaries, additional renal veins and variations. The venous system of 306 kidneys (from 131 males and 22 females) obtained from 100 pairs of resin casts and 53 pairs of plastinated kidneys were analysed. Based on a proposed definition of the renal vein, 3 major types (I, II, III) were identified using the drainage pattern of the primary renal vein tributaries and the renal vein as a basis on both the left and right sides. Type IA occurred most frequently (38.6%) and was commoner on the left. Type IB was the second most frequent (25.2%), with the other types showing lower and similar frequencies (10.1-14.4%). Statistically significant differences were noted between the left and right kidneys with regard to the classification into the different types (P < 0.0001). The proposed classification system is practical and has surgical and uroradiological relevance.
肾静脉引流模式的变异已有详尽描述，但现有的肾静脉分类存在不足之处。本研究旨在制定一种实用的肾静脉引流模式分类方法，同时考虑主要分支的数量、额外肾静脉及变异情况。对从100对树脂铸型肾和53对塑化肾获取的306个肾脏（其中131个来自男性，22个来自女性）的静脉系统进行了分析。基于所提出的肾静脉定义，以左右两侧肾静脉主要分支的引流模式及肾静脉为依据，确定了3种主要类型（I、II、III）。IA型最为常见（38.6%），且左侧更为多见。IB型次之（25.2%），其他类型出现频率较低且相近（10.1 - 14.4%）。不同类型在左右肾之间的分类存在统计学显著差异（P < 0.0001）。所提出的分类系统具有实用性，且在外科手术及泌尿放射学方面具有相关性。
