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Can CT predict the level of CSF block in tuberculous hydrocephalus?

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Abstract

Introduction

Treatment of obstructive hydrocephalus in children with tuberculous meningitis (TBM) depends on the level of the cerebrospinal fluid (CSF) block. Air-encephalography is regarded as the gold standard for differentiating communicating and non-communicating hydrocephalus. Since air-encephalography involves a lumbar puncture, it carries the risk of cerebral herniation.

Aim

The aim of this study was to determine whether communicating and non-communicating hydrocephalus in TBM can be differentiated by means of cranial computerised tomography (CT).

Methods

A number of CT indices were measured in 50 children with communicating and 34 children with non-communicating hydrocephalus according to air-encephalographic findings.

Results

The only CT finding that correlated with the type of hydrocephalus was the shape of the third ventricle. Significantly more children with non-communicating hydrocephalus had a rounded third ventricle than those with communicating hydrocephalus.

Conclusion

CT is therefore not useful in determining the level of CSF block in TBM. Air-encephalography remains the most reliable way of determining the level of CSF obstruction.

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Correspondence to J. F. Schoeman.

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Bruwer, G.E., Van der Westhuizen, S., Lombard, C.J. et al. Can CT predict the level of CSF block in tuberculous hydrocephalus?. Childs Nerv Syst 20, 183–187 (2004). https://doi.org/10.1007/s00381-003-0887-x

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  • DOI: https://doi.org/10.1007/s00381-003-0887-x

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