Nikolas
Created page with "<section begin="oncology" /><section begin="neurology" />'''Central nervous system tumours''' can be primary (originating in the CNS) or secondary (metastasis from other organ). Primary CNS malignancies account for 2% of adult malignancies, but 30% of childhood malignancies. In adults, secondary CNS tumours (metastases) are more common than primary, and CNS metastases occur in 10% of cancer patients. Metastasis is usually from lung cancer, breast cancer, or mel..."
