Favorito Luciano A, Costa Waldemar S, Sampaio Francisco J B
Urogenital Research Unit, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
Int Braz J Urol. 2007 Mar-Apr;33(2):176-80. doi: 10.1590/s1677-55382007000200007.
Analyze the anatomic variations of the testicular veins in human cadavers and fetuses.
One hundred male adult cadavers and 24 fetuses were studied. Four anatomic aspects were considered: 1) Number of testicular veins, 2) The local of vein termination, 3) Type and number of collaterals present and 4) Testicular vein termination angle.
Cadavers - Right side - One testicular vein occurred in 85% and 2 veins in 5% of the cases. There were communicating veins with the colon in 21% of the cases. Left side - One testicular vein occurred in 82%, two veins in 15%, three veins in 2% and four veins in 1% of the cases. There were communicating veins with the colon in 31% of the cases. Fetuses - Right side - One testicular vein occurred in all cases. This vein drained to the vena cava in 83.3% of the cases, to the junction of the vena cava with the renal vein in 12.5% and to the renal vein in 4.2%. There were communicating veins with the colon in 25% of the cases. Left side - One testicular vein occurred in 66.6% of the cases, and 2 veins in occurred 33.3%. Communicating veins with the colon were found in 41.6% of the cases.
The testicular vein presents numeric variations and also variations in its local of termination. In approximately 30% of the cases, there are collaterals that communicate the testicular vein with retroperitoneal veins. These anatomic findings can help understanding the origin of varicocele and its recurrence after surgical interventions.
分析人类尸体和胎儿睾丸静脉的解剖变异。
研究了100具成年男性尸体和24例胎儿。考虑了四个解剖方面：1）睾丸静脉数量；2）静脉终止部位；3）存在的侧支类型和数量；4）睾丸静脉终止角度。
尸体——右侧——85%的病例有一条睾丸静脉，5%的病例有两条。21%的病例有与结肠的交通静脉。左侧——82%的病例有一条睾丸静脉，15%的病例有两条，2%的病例有三条，1%的病例有四条。31%的病例有与结肠的交通静脉。胎儿——右侧——所有病例均有一条睾丸静脉。该静脉83.3%引流至腔静脉，12.5%引流至腔静脉与肾静脉的交界处，4.2%引流至肾静脉。25%的病例有与结肠的交通静脉。左侧——66.6%的病例有一条睾丸静脉，33.3%的病例有两条。41.6%的病例发现有与结肠的交通静脉。
睾丸静脉存在数量变异及其终止部位的变异。在大约30%的病例中，有侧支将睾丸静脉与腹膜后静脉连通。这些解剖学发现有助于理解精索静脉曲张的起源及其手术干预后的复发情况。
