Posted in Web What Is a Spermatocele (Epididymal Cyst) or Spermatic Cyst? January 23, 2021 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 … https://www.webmd.com/men/spermatocele-or-epididemal-cysts