#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

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