Consumer health basics
Learning Center
Proton therapy
Learn about this newer form of radiation therapy, used to treat cancer and noncancerous tumors, and how it's different from X-ray radiation.
Prothrombin time test
This simple test measures how quickly your blood clots. Find out why it's done and what to expect.
Prostatectomy
Learn about surgical options and advances in prostatectomy, including robotic surgery, as well as the risks involved with each approach.
Prostate laser surgery
Prostate laser surgery — Overview covers the risks and results of this treatment to relieve symptoms caused by an enlarged prostate.
Prostate brachytherapy
Learn about this type of radiation therapy for prostate cancer that involves placing radioactive seeds or wires in the prostate gland.
Prostate biopsy
Find out about this procedure that's used to diagnose prostate cancer. Learn about the risks, how to prepare and what you can expect.
Preemptive kidney transplant
Find out more about preemptive kidney transplant – an alternative to dialysis for treatment of end-stage kidney disease – and what to expect.
Precision medicine for breast cancer
Learn how precision medicine uses genetic testing and drug-gene testing (pharmacogenomics) to diagnose, treat and prevent breast cancer.
Positron emission tomography scan
Learn how this imaging scan can play an important role in early detection of health problems, such as cancer, heart disease and brain disorders.
Polysomnography (sleep study)
Your health care provider may order this test if a sleep disorder such as sleep apnea is suspected. Learn how to prepare and what to expect.
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