Accumulation of fluid formed around a testicle is called a hydrocele. It is a kind of swelling in the scrotum which occurs when the fluid collects in the thin sheath around the testicle. It occurs mainly on one side of the testicle but it can occur over both testicles as well.
It is commonly found in babies but can also develop in adult boys and men. Hydrocele can affect any male irrespective of his age. Hydrocele in babies does not require any treatment as it is painless and causes no harm as such.

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