A varicocele can be an enlargement of your veins within the loose bag of skin that holds your testicles (scrotum). It’s much like a varicose vein you would possibly see on the leg. Varicoceles are a typical reason for minimal sperm manufacturing and reduced sperm quality, which may cause infertility. https://www.sgvascularctr.com/what-are-some-common-vein-treatments/