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pleocytosis Line breaks: pleo|cy¦to¦sis
Pronunciation: /ˌpliːə(ʊ)sʌɪˈtəʊsɪs/

Definition of pleocytosis in English:


[mass noun] Medicine
The presence of an abnormally large number of lymphocytes in the cerebrospinal fluid.
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.

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