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A hydrocele is a fluid-filled sac around a testicle. Hydroceles are often first noticed as swelling of the scrotum.
A hydrocele is a very common noncancerous swelling in the scrotum. "Hydro" means water, and "cele" means collection. A hydrocele means a water collection next to the testicle. The swelling is filled with clear fluid. Hydroceles are common but are not usually a health concern. Sometimes they grow and require treatment, or the patient wants treatment.
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