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Learning Center
Scrotal masses
Lumps in the scrotum have various causes. Even painless lumps should be checked promptly by a health care professional.
Domestic violence against men: Recognize patterns, seek help
Domestic violence against men is real. Find out how to break the cycle.
Retractile testicle
Find out about this condition that allows the testicle to move between the scrotum and groin.
Blood in semen
Finding blood in your semen can be alarming, but the cause is usually benign. Find out possible causes and when to see a doctor.
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
External beam radiation for prostate cancer
Learn about the risks and results of this procedure, which is used to deliver radiation therapy for prostate cancer.
Penile implants
Explore your choices and learn what to expect from penile implant surgery.
Testicular exam
Examining your testicles regularly can help you notice changes when they occur and identify testicular problems.
Testosterone therapy: Potential benefits and risks as you age
Testosterone therapy — Explore the potential benefits and risks of increasing your testosterone level.
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