#brain_tumor__braintumor__brain_tumour__braintumour  a tumor in the brain
  supertype:  tumor__tumour__neoplasm  an abnormal new mass of tissue that serves no purpose
  subtype:  glioblastoma__spongioblastoma  a fast-growing malignant brain tumor composed of spongioblasts; nearly always fatal
  subtype:  glioma  a tumor of the brain consisting of neuroglia

No statement uses or specializes brain_tumor; click here to add one.