Bacterial meningitis - septation of subarachnoid spaces

Case contributed by Dr Ammar Haouimi

Presentation

Status epilepticus with altered consciousness in a baby under treatment for cerebral infection.

Patient Data

Age: 2 months
Gender: Female

The MRI sequences demonstrate:

No abscess formation or subdural empyema is seen.

Case Discussion

MRI features most consistent with extensive meningitis with internal septation of the subarachnoid spaces.

This baby was treated for bacterial meningitis (culture-proven for Escherichia coli) and developed antibiotic resistance with status epilepticus.

The internal septation of the subarachnoid spaces is usually seen in the complication phase of bacterial meningitis (including tuberculous origin) with hydrocephalus due to an obstruction at the level of the aqueduct of Sylvius or the 4th ventricle.

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