Q: Answers A: 1 Interpretation of CSF liquor: - Clear/colorless CSF - Pleocytosis: 60 cells/µL lymphocytes 35, neutrophils 15 - Protein: 0.33 g/L normal or mildly increased - Chloride: 120 mmol/L near normal - Glucose: 1.0 g/L not decreased This pattern is most consistent with serous aseptic/viral meningitis: predominantly lymphocytic pleocytosis, no marked hypoglycorrhachia, and no major protein elevation. 2 Nosology diagnosis: Acute viral aseptic, serous meningitis, most likely enteroviral etiology given vesicles on soft palate/arches, compatible with herpangina-associated enterovirus infection. Short clinical note: neck rigidity + meningeal symptoms support meningitis; CSF profile argues against classic bacterial purulent meningitis. Recent evidence check last 2 years: no direct contradiction to this interpretation from the quick PubMed screen. Relevant PMIDs: 38717582, 39784111, 38658176. Q: Answers with explanation and also normal values and abnormal A: 1 CSF interpretation with normal vs abnormal Clinical context: 5-year-old with fever, headache, vomiting, meningeal signs. Parameter Patient value Typical normal child, LP tube Interpretation ------:---:--- Appearance/color Colorless, clear Clear, colorless Normal WBC cells/µL 60 0-5 Abnormal: pleocytosis Differential Lymphocytes 35, neutrophils 15 Usually very few cells; no inflammatory predominance Abnormal inflammatory pattern, relatively lymphocyte-predominant Protein g/L 0.33 0.15-0.45 lab dependent Within normal range or minimal rise only Glucose g/L 1.0 0.45-0.80 depends on blood glucose; CSF usually 60% of serum Not low; relatively preserved for meningitis pattern Chloride mmol/L 120 118-132 Normal What this pattern means - There is meningeal inflammation WBC 60/µL. - The profile is not typical for acute bacterial purulent meningitis, where we usually expect: - much higher neutrophilic pleocytosis, - clearly increased protein, - decreased CSF glucose. - The profile is most consistent with serous/aseptic usually viral meningitis. --- 2 Nosological diagnosis Acute aseptic serous meningitis, most likely viral enteroviral. Why likely enteroviral in this case: - Age 5 years common for enteroviral CNS infection, - Fever + headache + vomiting + meningeal signs, - Oropharyngeal vesicles on soft palate/arches herpangina-type lesions, which strongly suggests enterovirus e.g., Coxsackie/echovirus source. --- Quick exam-style final answer 1. Liquor analysis: clear CSF, moderate pleocytosis 60/µL with relative lymphocytic predominance, normal protein, normal chloride, glucose not decreased - inflammatory CSF of serous aseptic/viral type. 2. Nosology: Acute viral aseptic, serous meningitis, probable enteroviral meningitis. If you want, I can also give you a compact “viral vs bacterial vs TB meningitis CSF” comparison table for viva/exam use.
