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Definition
By Mayo Clinic staffA varicocele is an enlargement of the veins within the scrotum, the loose bag of skin that holds your testicles. A varicocele is similar to a varicose vein that can occur in your leg.
About one in six men have a varicocele. For males who are infertile, the figure is higher — about 40 percent. Varicoceles are the most common cause of low sperm production and decreased sperm quality, although not all varicoceles affect sperm production.
Most varicoceles develop over time. Fortunately, most varicoceles are easy to diagnose and, if they cause symptoms, can be repaired surgically.
