Expert Video - What is radiation therapy? When is it needed?

Radiation therapy, unlike chemotherapy, is a focused type of treatment that is used in localized cancers. A radiation beam is directed at a specific area of the lung for example. It’s used as a local therapy when a surgeon cannot remove the cancer in the chest. It is also used in cases where there are no other treatment options, for example if the lung cancer has spread to the brain then chemotherapy has difficulty passing the blood-brain barrier, so radiation therapy will be used. Radiation therapy is also used if the lung cancer has spread to the bone.

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