Epididymal cyst is a harmless sac in the testicles filled with fluid.

[2] The most frequent clinical presentation occurs when a routine physical examination yields an unexpected finding, which is then confirmed by scrotal ultrasonography.

[1] Although the exact cause of epididymal cysts is unknown, it is likely a congenital anomaly associated with hormonal imbalances during the embryonic stage of development.

[3] An epididymal cyst, a benign cystic fluid collection in the scrotum, usually manifests as a painless swelling on top of the testicle and can be inadvertently discovered during a physical examination.

[1] The exact cause of an epididymal cyst is unknown, but it is most likely a congenital anomaly associated with hormonal imbalances during embryonic life.