Pediatric Epididymal Cyst (Spermatocele)

Pediatric Epididymal Cyst (Spermatocele)



A epididymal cyst – also known as spermatocele – is a cyst on the scrotum on top of the testicle.

Expanded overview

A spermatocele (epididymal cyst) is a fluid-filled cyst that develops in the long, tightly coiled tube that is located above and behind each testicle (epididymis). The fluid in the cyst may contain dead sperm. A spermatocele feels like a smooth, firm lump in the scrotum on top of the testicle. Having an epididymal cyst does not affect fertility. There is no confirmed cause.


In many cases, the cyst causes no symptoms or pain. When they do occur, signs and symptoms of an epididymal cyst include:

  • Feeling of pressure at the base of the penis
  • General enlargement of the scrotum
  • Lump or mass above the testicle on one side of the scrotum
  • Pain
  • Redness
  • Swelling 

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