“…Infiltration of the CNS by blast cells is highly uncommon. 14 CNS blast crisis is often associated with meningitis- or encephalitis-related clinical and radiological characteristics, including headache, ataxia, apahasia, seizures, and meningismus, and localized neurological symptoms and signs like. 13 , 21 Myeloid or lymphoid blasts are detected in the cerebrospinal fluid (CSF) and, in certain cases, molecular testing of the CSF reveals typical BCR-ABL oncogenes.…”