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By Mayo Clinic staffA spermatocele is unlikely to cause complications.
Sperm normally travel through the tubes of the epididymis. A blocked tube causes the sperm to die, which is why a spermatocele may be filled with dead sperm. However, even if one of the tubes that drain sperm is blocked, others remain open, allowing sperm through. So a spermatocele doesn't affect the overall transport of sperm or impair fertility. However, surgical removal may damage the epididymis or the vas deferens, a tube that transports sperm from the epididymis. Damage to either can impair fertility.