What is the cause of varicocele?

Only by knowing the cause of the disease can we find an effective solution. As for the causes of varicocele, there are several. The first is primary VC, which is the most common cause. It is caused by increased venous pressure, which causes the spermatic vein to touch other areas during its course and cause it to rupture. It is also caused by compression and blockage of the supramarginal artery and aorta of the NCS. The second is secondary VC, which is a disease caused by tumor blockage.

1. Primary VC

Left-side varicocele is more common than right-side varicocele. The possible reasons are: ① Increased intravenous pressure because the left spermatic vein is long and merges into the left renal vein at a right angle; ② "Nutcracker" phenomenon (NCS), the superior mesenteric artery and aorta compress the left renal vein, affecting the return of the left internal spermatic vein and even causing reflux, which is the "Nutcracker" phenomenon (NCS); ③ Weak connective tissue around the internal spermatic vein and absent venous valves are common on the left side.

Relevant factors for the occurrence of primary varicocele: ① Absence or poor function of the varicocele valve leading to blood reflux; weakness of the varicocele wall and surrounding connective tissue, or incomplete development of the levator testis muscle and other anatomical factors. ③Upright posture affects spermatic vein return.

2. Secondary VC

Causes and diseases include: left renal vein or vena cava tumor thrombosis, renal tumor, intra-abdominal or retroperitoneal tumor, left renal vein or vena cava tumor thrombosis, renal tumor, pelvic tumor, giant hydronephrosis, ectopic blood vessels compressing the ascending spermatic vein