noun[mass noun] Medicine
- The presence of an abnormally large number of lymphocytes in the cerebrospinal fluid.More example sentences
- The diagnosis of meningitis was based on a typical clinical presentation and a marked neutrophilic pleocytosis in the cerebrospinal fluid.
- Examination of the cerebrospinal fluid typically shows a moderate lymphocytic pleocytosis, though sometimes there may be no cells or neutrophils may predominate.
- 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.