A type of external radiation therapy that uses special equipment to position the patient and precisely give a single large dose of radiation to a tumor. It is used to treat brain tumors and other brain disorders that cannot be treated by regular surgery. It is also being studied in the treatment of other types of cancer. Also called stereotaxic radiosurgery, radiosurgery, and radiation surgery.

Treatment with corticosteroid drugs to reduce swelling, pain, and other symptoms of inflammation.

An organ that is part of the digestive system. The stomach helps digest food by mixing it with digestive juices and churning it into a thin liquid.

Cancer that forms in tissues lining the stomach. Also called gastric cancer.

Beneath the skin.

Care given to improve the quality of life of patients who have a serious or life-threatening disease. The goal of supportive care is to prevent or treat as early as possible the symptoms of a disease, side effects caused by treatment of a disease, and psychological, social, and spiritual problems related to a disease or its treatment. Also called palliative care, comfort care, and symptom management.

The removal of tissues by a surgeon for examination by a pathologist. The pathologist may study the tissue under a microscope.

The percentage of people in a study or treatment group who are alive for a given period of time after diagnosis or treatment. This is often measured 5 years after diagnosis or treatment and called the 5-year survival rate. Also called overall survival rate.

In cancer, survivorship covers the physical, psychosocial, and economic issues of cancer, from diagnosis until the end of life. It includes issues related to the ability to get health care and follow-up treatment, late effects of treatment, second cancers, and quality of life.

An indication that a person has a condition or disease. Some examples of symptoms are headache, fever, fatigue, nausea, vomiting, and pain.

A set of symptoms or conditions that occur together and suggest the presence of a certain disease or an increased chance of developing the disease.

Treatment with anticancer drugs that travel through the blood to cells all over the body.

Disease that affects the whole body.

A type of radiation therapy in which a radioactive substance, such radioactive idoine or a radioactively labeled monoclonal antibody, is swallowed or injected into the body and travels through the blood, locating and killing tumor cells.

Treatment using substances that travel through the bloodstream, reaching and affecting cells all over the body.