Many men have enlarged veins in their scrotum. The scrotum is the sac that houses the testicles or testes. Doctors call these enlarged veins found in the testicles varicoceles. Many men with varicoceles do not show any symptoms, but some can have fertility problems.
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Some studies show that treating varicoceles can improve fertility. However, a systematic review suggests that the available evidence is scant and that doctors should do more research on this topic.
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