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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.
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.
Colectomy
If you're having colon surgery, learn what to expect, the risks and how to prepare.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Chemotherapy for breast cancer
Learn how doctors use this drug treatment to kill rapidly growing breast cancer cells. Find out about chemotherapy side effects and what you can expect.
Cataract surgery
Cataract surgery — Overview covers risks, complications, results of this eye surgery.
Cardioversion
Learn what to expect during this treatment to reset the heart rhythm.
Cardiac rehabilitation
Learn more about this personalized program to improve heart health through exercise, education and support.
Cardiac ablation
Heat or cold energy applied to the heart can correct rapid or erratic heartbeats. Know when you might need this treatment and the risks.
COVID-19 diagnostic testing
Find out how COVID-19 diagnostic testing is done to learn if you're currently infected with SARS-CoV-2, the virus that causes coronavirus disease 2019.
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