• Living With Cancer: Throat cancer — risk factors and prevention

a medical illustration of the anatomy of the nasal cavity, palate, tongue and throatThroat cancer 
Throat cancer refers to cancerous tumors that develop in your throat (pharynx), voice box (larynx) or tonsils. Signs and symptoms of throat cancer may include a cough, difficulty swallowing, ear pain and weight loss. While it's not clear what causes throat cancer, health care providers have identified factors that may increase your risk. Learn what you can do to reduce your risk of throat cancer and when you need to seek medical care.

Is endometriosis a risk factor for ovarian cancer? 
Ovarian cancer occurs at higher than expected rates in women with endometriosis, but the overall lifetime risk is low. Some studies suggest that endometriosis increases that risk, but it's still relatively low. Although rare, another type of cancer — endometriosis-associated adenocarcinoma — can develop later in life in women who have had endometriosis. Learn more from Dr. Sandhya Pruthi, a Mayo Clinic general internal medicine physician.

Radiation therapy for breast cancer
Radiation therapy for breast cancer uses high-energy X-rays, protons or other particles to kill cancer cells. Rapidly growing cells, such as cancer cells, are more susceptible to the effects of radiation therapy than normal cells. Radiation therapy may be used to treat breast cancer at almost every stage and is an effective way to reduce your risk of breast cancer recurring after surgery. In addition, radiation therapy is commonly used to ease the symptoms caused by cancer that has spread to other parts of the body (metastatic breast cancer). Learn more about radiation therapy for breast cancer.

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