Spermatocele

A spermatocele is a fluid-filled growth (cyst) that develops from your epididymis. Your epididymis is a tube that runs behind and over the top of each testicle. Its main job is to store and transport sperm. Sperm are male reproductive cells.

Spermatoceles can develop above or behind your testicles (testes). Inside each spermatocele is a clear or cloudy fluid that may contain sperm.

Other names for spermatoceles include spermatic cysts or epididymal cysts.

Spermatoceles don’t typically hurt, so you may not notice a lump right away. Even if there isn’t pain, it can be scary to notice a lump around your testicle. Talk to a healthcare provider if you notice changes to your testicles. Talking to a healthcare provider about any changes to your testicles is the first step in getting an official spermatocele diagnosis and soothing any frightening thoughts or feelings.

How common are spermatoceles?

Spermatoceles are fairly common. They affect nearly 1 in 3 adult men or people assigned male at birth (AMAB).