A varicocele can be an enlargement of your veins throughout the unfastened bag of skin that holds your testicles (scrotum). It’s similar to a varicose vein you may see in your leg. Varicoceles are a common reason for minimal sperm generation and lessened sperm excellent, which can cause infertility. Pregnancy. https://www.sgvascularctr.com/what-are-some-common-vein-treatments/