Brain Prophylactic Radiation for lung cancer

Small-Cell lung cancer often spreads to the brain. Sometimes people with Small-Cell Lung Cancer that is responding well to treatment are treated with radiation therapy to the head to treat very early spread to the brain (called micrometastasis) that is not yet detectable with CT or MRI scans and has not yet produced symptoms. Brain radiation therapy can cause short-term memory problems, fatigue, nausea and other side effects.