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Nephrectomy (kidney removal)
Learn about surgery to remove all or part of a kidney.
Nondirected living-donor transplant
Nondirected living donor — Find out what becoming a good Samaritan, also called nondirected, living organ donor means to transplantation.
Nuclear stress test
This type of stress test uses a tiny bit of radioactive material to look for changes in blood flow to the heart. Know why it's done and how to prepare.
Oophorectomy (ovary removal surgery)
Learn about the risks, recovery and what to expect during surgery to remove the ovaries.
Oral cancer screening
Learn about the benefits and limitations of tests to detect mouth cancer.
Otoplasty
Learn about this cosmetic procedure, which is done to change the appearance of your ears. Understand risks and what results to expect after surgery.
PSA test
Learn about this prostate cancer screening test, including why it's done, what to expect, risks and results.
Pacemaker
This cardiac pacing device is placed in the chest to help control the heartbeat. Know when you might need one.
Palliative care
Learn what to expect with this care approach that offers symptom relief for seriously ill people of any age.
Pancreas transplant
Pancreas transplant offers a potential cure for people with serious complications from diabetes. Learn what to expect before and after this procedure.
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