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Encysted hydrocele of the cord

There is a smooth oval swelling near the spermatic cord which is liable to be mistaken for an inguinal hernia. The swelling moves downwards and becomes less mobile if the testis is pulled gently downwards. Rarely, a hydrocele develops in a remnant of the processus vaginalis somewhere along the course of the spermatic cord. This hydrocele also transilluminates, and is known as an encysted hydrocele of the cord. In females, a related region in females, a multicystic hydrocele of the canal of Nuck sometimes presents as a swelling in the groin. It probably results from cystic degeneration of the round ligament. Unlike a hydrocele of the cord, a hydrocele of the canal of Nuck is always at least partially within the inguinal canal.