A spermatocele (also called a spermatic or epididymal cyst) is a fluid-filled sac that grows in the epididymis -- a tightly coiled tube about 20 feet long where the sperm matures as it passes through.

You should not try to remove a cyst on your own. Most cysts on the skin are harmless and resolve without treatment. But some cysts may require a medical diagnosis and treatment. Cysts are sacs that ...