The presence of an abnormally large number of lymphocytes in the cerebrospinal fluid.
〔医〕脑脊液（淋巴）细胞增多
Example sentencesExamples
The diagnosis of meningitis was based on a typical clinical presentation and a marked neutrophilic pleocytosis in the cerebrospinal fluid.
The cerebrospinal fluid shows increased protein content and pleocytosis with normal glucose concentration, but the virus is more commonly isolated from the nasopharynx or stools.
Examination of the cerebrospinal fluid typically shows a moderate lymphocytic pleocytosis, though sometimes there may be no cells or neutrophils may predominate.
If pleocytosis was present, the CSF should be re-examined every six months until the white blood cell count is normal.
These patients often have a peripheral eosinophilic pleocytosis.