Cerebral metastases are the most common brain tumor in clinical practice since up to 30% of all patients with a history of cancer will develop metastatic lesions in the brain. Therefore, all cancer patients should undergo an imaging investigation of the brain in regular time intervals which must not exceed, in most cases, 6 months, for at least 2 years after diagnosis. This is particularly important in patients with primary cancers that frequently metastasize to the CNS, poor local tumor control, or when other distant metastases are present. Additionally, all cancer patients with new neurological symptoms or progressive neurological deficits should promptly perform an imaging of the relevant parts of the central nervous system.
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