List of abbreviations CNS: Central nervous system WHO: World Health Organization NF2: Neurofibromatosis 2 MA: Meningioangiomatosis ECOG: Eastern cooperative oncology group ALL: Acute lymphocytic leukemia CSF: Cerebrospinal fluid RIM: Radiation -
induced meningiomas FISH: Fluoroscence in - situ hybridization CT: Computed tomography MRI: Magnetic resonance imaging