Concerned doctor with teen patient A sonogram reveals a 9-mm epididymal cyst. An 18-year-old male presents with sudden inguinal pain that did not result from an injury or lifting. A physical ...

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.

A spermatocele is an often pain-free benign cyst that occurs close to a testicle. It may also be known as a spermatic or epididymal cyst. The cyst forms in the epididymis. The epididymis is a coiled ...