 The main objective of the protocol is the establishment of a repository of central nervous system CNS tumors or metastases to the CNS and related tissues as an invaluable resource for current or future research studies of the etiology, pathogenesis and treatment of human central nervous system tumors. The database will be established through the intra-operative acquisition of brain or spine tumors as well as the collection of blood and spinal fluids from consenting CNS tumor patients. 