Anatomical study of the left renal vein of human brazilians cadavers

Abstract

The study of the anatomical variations of the left renal vein (LRV) is an important subject to the accomplishment of the anastomosis to the surgical treatment of the portal hypertension, to the radiological studies and to the nephrectomies of the renal transplantation donors. This is a retrospective; transversal and observational study whose objective was to identify and study the anatomical variations of the LRV in cadavers. We have analyzed 34 cadavers (24 male; 10 female) under the following aspects: number of the tributaries renaIs, number of the accessories renals, position in relation to the abdominal aorta (Ao) and in relation to the left renal artery (LRA) and length of the LRV. The LRV was single in 91,1% of the cases and double in 8,9% (n=3). It was observed one case of circumaortic LRV. Among the 34 studied cases, 55,8% (n=19) showed two tributaries which joined to form a principal LRV, 14,7 % (n=5) showed three tributaries and in 29,4% (n=10) they were absent (to mean when the LRV is originated directly from left kidney without be seen tributaries, on the hile, that contribute to its formation). The renolumbar vein was present in 26,4% (n (23,5% single; 2,9% double.). The testicular / ovarian vein was single in 85,2% (n=29) and double in 8,8% (n3). In two cases it could not be studied. In relation to the position of the Ao and to the LRA, the LRV is basically found in the anterior topography with percent variations of 44,5% to 96,5%, depending if the LRA was single, double, or triple. The average length was of 5,4 cm varying from 2,2 cm to 8,0 cm. In this study we came to the conclusion that the renal tributaries were more frequently two; the renolumbar vein was present in a frequency inferior to the one in the literature; the testicular/ovarian was more frequent in the single form; the more frequent position in relation to the Ao and to the LRA was the anterior and average length of the LRV was in accordance only with two of the publications in which this parameter was analyzed.