| Abstract: | Unusual inflammatory reactions in cerebrospinal fluid (CSF) in five patients were explicable by the type of intracranial injury or surgical intervention that they had received or by their basic disease process. Lumbar puncture fluid from a 64-year-old man with multiple facial fractures contained neutrophils, bacteria, Candida sp. and ciliated columnar cells, findings consistent with a basilar skull fracture allowing paranasal sinus contents to enter the subarachnoid space. A 59-year-old man with angioimmunoblastic lymphadenopathy developed meningitis and suffered a respiratory arrest; a ventricular fluid contained acute inflammatory cells as well as numerous corpora amylacea. Lumbar CSF obtained during surgery from a 26-year-old man with a pontine glioma contained numerous histiocytes clustered around polarizable filaments, probably strands of gauze introduced during surgery. A specimen of CSF obtained intraoperatively from a 54-year-old man with an acoustic neuroma undergoing a second craniotomy contained multinucleated giant cells bearing suture material. A 19-year-old girl with systemic sarcoidosis had noncaseating granulomas in the right temporal lobe and multinucleated giant cells in her CSF. |
