Vasectomy information
Vasectomy is a minor operation that is usually done at a doctor's office or at a clinic. During the vasectomy surgery, the two tubes that carry sperm from the testicles to the urinary tract are altered so sperm cannot pass through and be released to fertilize a woman's egg during sexual intercourse.
Vasectomy and the risk of
prostate cancer
Vasectomy and the risk of prostate cancer.
J Urol. 2008 Dec;180(6):2565-7; Holt SK, Salinas CA, Stanford JL. Division
of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle,
Washington 98109-1024, USA.
While the weight of evidence shows no association overall between vasectomy and
prostate cancer, there has been some suggestion that an association may exist in
subgroups, such as men who have a family history of prostate cancer, men who
undergo vasectomy at a younger age or when several decades have passed since the
procedure. Studies of risk with long latency periods have been hampered by small
sample sizes in subgroups since vasectomy only became widely used in the 1960s
and generally prostate cancer has a long latency period. We found no
associations between prostate cancer and age at vasectomy, years elapsed since
vasectomy or calendar year of vasectomy. Our findings indicate that there is no
association between vasectomy and the risk of prostate cancer.
Semen samples
Many men who have a vasectomy fail to ever submit a
semen sample to make sure the procedure worked. After a vasectomy, men have to
submit semen samples to make sure there is no sperm, or at least no viable
sperm. Most urologists want two consecutive sperm-free samples, which means
asking patients to return at least twice after their vasectomy. However, many
men fail to do so. Sometimes one-quarter of the patients they followed never
returned to submit a semen sample. And half didn't get a second sperm analysis,
as their surgeon had advised.
On the other hand, the majority of men in both groups failed to have a second
confirmatory test. The problem may rest not
with the patients, but with the post-vasectomy process. Asking men to submit two
sperm-free sample may be overly demanding. BJU International, May
2007.
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