Cytological diagnosis of tumor cells in the cerebrospinal fluid.
D001932:Brain Neoplasms / Q000134:cerebrospinal fluid* / Q000175:diagnosis / Q000473:pathology; D002555:Cerebrospinal Fluid / Q000166:cytology*; D003581:Cytodiagnosis; D006801:Humans; D008722:Methods; D009362:Neoplasm Metastasis