Quit-smoking basics
Learning Center
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Cochlear implants
This electronic device improves hearing in people who have severe hearing loss from inner ear damage.
Colectomy
If you're having colon surgery, learn what to expect, the risks and how to prepare.
Combination birth control pills
This oral contraceptive contains both estrogen and progestin to keep you from ovulating. These medicines prevent pregnancy and can have other benefits.
Concussion testing and screening tools
These screening tools help measure brain function after head trauma and help athletes at risk of head injuries.
Cornea transplant
This procedure uses donor tissue to restore vision and reduce pain from cornea disease. Our overview helps you understand the risks and benefits of this sight-saving operation.
Cosmetic surgery
The goal of this type of surgery is to improve your appearance. It can involve large changes, so it's important to understand what to expect.
Craniotomy
Learn the brain conditions that are treated with this surgery that involves removing a piece of the skull. Also find out what you can expect during surgery.
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
Dilation and curettage (D&C)
Learn what to expect during this procedure, how a doctor performs it to remove uterine tissue and what to watch out for during recovery.
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