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Valve disease occurs when a valve doesn't open or close the way it should. If a valve doesn't open all the way, the heart has to push blood through a smaller opening. If the valve doesn't close tightly, some blood will leak backward.

When you have rectal bleeding, tests may be done to help confirm your diagnosis and plan your treatment. Read on to learn more about these procedures.

Chemotherapy may be able to cure breast cancer. If a cure isn't possible, chemotherapy may help keep the cancer from growing or spreading. Or it may help ease symptoms caused by cancer and improve your quality of life.

Being told you have prostate cancer can be scary, and you may have many questions. But you have people on your healthcare team to help.

Immunotherapy is a type of treatment that boosts your body’s own immune system to help it recognize and attack cancer cells. It either boosts the immune system overall or helps it better target cancer cells.

Oral cancer is often curable, especially if it is found early. Treatment can also help control oral cancer, meaning it may help control symptoms or reduce its spread. Once you know the type and stage of oral cancer you have, you and your healthcare provider will decide on a treatment plan. Read on to learn more.

Learn how radiation may be used to treat stomach cancer.

If your healthcare provider thinks you may have lung cancer, you will need certain exams and tests to be sure.

Not everyone with lung cancer needs chemotherapy. But it is part of the standard treatment for most people.