Of the 500,000 people every year who get vasectomies, about 5 to 10 percent change their minds after the fact. The procedure, which sterilizes men by severing the tube supplying sperm to the urethra, ...
A vasectomy is a form of permanent male contraception that involves surgically cutting or blocking the vas deferens, the tubes that carry sperm from the testicles to the penis. Sperm is needed to ...
Adult males with cystic fibrosis are infertile because of failure of normal development of the vas deferens, a finding not previously recognized. Twenty-five patients over 17 years of age were found ...
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