spermatocele

spermatocele /spərmat″əsēl′, spur″-/ [Gk, sperma + kele, tumor] , a cystic swelling, either of the epididymis or of the rete testis, that contains spermatozoa. It lies above, behind, and separate from the testis. It is usually painless and requires no therapy.

Spermatocele (Lloyd-Davies et al, 1994)