Nikolas
Created page with "== Introduction == The majority of CNS tumors are brain metastases; these are three times as common as all primary CNS tumors combined. The most common primary sites of brain metastases are breast and lung tumors, melanoma, renal cell cancer and colorectal cancer. The most common primary CNS tumors in adulthood are glioblastomas, meningiomas and vestibular schwannomas while for childhood pilocytic astrocytomas, meningiomas and medulloblastomas are most frequent. Tumors..."