The Anatomic Study Of The Left Spermatic Vein On40Cases Of Adult Males

Objective:Observing the origin, the number of valves, the direction, length,and location of the left spermatic vein, and its import site to the renalvein as well as its relationship with the adjacent structures in order toprovide the anatomical knowledge about the left spermatic vein, makeclear the site of its origin and its relationship to the left renal vein andother adjacent structures, and provide precise information for clinicalvaricocele surgery.Materials and methods:Forty (40sides) adult male formalin fixed teaching cadavers ofunknown age. Measuring the length of the left spermatic vein, the outerdiameter of the spermatic vein at the beginning and at the end where itconverged into the trunk of renal vein, the angle between the leftspermatic vein and the left renal vein. Observing its relationship to theadjacent structures.Results:1More than one vein could be found in the scrotum, abdomen andabdominal ring. There were2~6veins at the root of the scrotum, with most cases having4~6veins (87.50%). The veins ranged in numberfrom1to6in the belly ring, and most cases had2~4veins (85.00%). Inthe abdomen there were1~3veins, with most cases having one vein(72.00%).2The distances from the beginning of the left spermatic vein to thesite where it merged into the trunk was181.53±15.12mm. The longestwas220.66mm while the shortest was121.38mm.3The outer diameter of the left spermatic vein at its beginning was3.14±0.43mm, while the outer diamante of the main vein was4.50±0.88mm.4The cases in which no valves were found in the left spermatic veintook up62.50%(25cases), while those with valves took up37.50%. In15cases with valvular spermatic veins, the number of valves rangedfrom1to3, among which one valves was commonly found, accountingfor66.67%. Both single and double valves were found in these cases,and most of them had double valves.5The angle between the left spermatic vein and the left renal veinranged70°to135°, and most cases showed about a right angle (29cases,74.36%).Conclusion:1Varicocele occurs mainly in the left spermatic vein, which was mainly related to its right angle to the left renal vein and the absence ofvein valves, as well as its complex relationship to the adjacent structures.2During the interventional treatment of varicocele embolization,catheter should be input forward in the left and right iliac confluence,then turned left in order to enter the left renal vein. The opening canfound in the middle part of the renal vein. Emboli intervention with ansuitable diameter should be chosen.3There were various branches in different portions of the leftspermatic vein, and therefore intra-operative spermatic vein ligationshould include as many branches as possible.