Palliative Radiation for Brain Metastases
The brain is one of the most common sites of cancer metastasis. Approximately half of the patients who develop brain metastases will be diagnosed with a single metastatic lesion. Spread is through hematogenous dissemination commonly to the watershed area at the gray/white matter junction. Metastases follow blood supply with the most occurring in the supratentorial brain. Some histologies, notably small cell lung cancer, prostate and gastrointestinal cancers are commonly found in the cerebellum.