Spermatoceles: A Common, Harmless Testicular Lump

A spermatocele is a fluid-filled cyst that develops in the epididymis, the coiled tube behind the testicle — and it's one of the more common, entirely benign explanations for a new testicular lump.

What it feels like

Spermatoceles are typically smooth, round, and movable, usually located above and behind the testicle rather than on the testicle itself. They're generally painless, and many are only noticed incidentally during a self-exam or a routine physical rather than causing any symptoms that prompted the exam in the first place.

Why it still needs a doctor's confirmation

Even though spermatoceles are benign and common, they can't be reliably distinguished from other, less benign causes of a testicular lump through self-exam alone — that's exactly why any new testicular lump gets a doctor's exam (often with an ultrasound) rather than a wait-and-see approach, regardless of how confident you feel it's "probably nothing." If it is a spermatocele, treatment usually isn't needed at all unless it grows large enough to cause discomfort, in which case it can be surgically removed.

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This page summarizes general, widely accepted information for educational purposes and isn't a substitute for advice from a healthcare provider about a specific situation.

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