Abstract
Radiological studies on HIV infection in tuberculous meningitis (TBM) in children are limited to small, retrospective studies using CT features. They report that HIV-infected children are less likely to display meningovascular enhancement, tuberculoma formation and obstructive hydrocephalus. No similar MRI-based studies were found in the literature. The purpose of this study is to compare the MRI features of TBM in HIV-infected and uninfected children. Retrospective descriptive study comparing clinical, laboratory and MRI features of 8 HIV-infected and 19 HIV-uninfected children with TBM. Intense basal meningeal enhancement occurred less frequently (p = 0.31) in HIV-infected children whilst cerebral atrophy was more commonly encountered (p = 0.06) Neither finding was however of statistical significance. All HIV-infected children had visible meningeal nodules on MR imaging compared to 72% in HIV-uninfected children with TBM. No differences were noted regarding number or location of infarcts and presence of hydrocephalus. Hydrocephalus in HIV-infected children was exclusively of communicating nature. The MRI criteria for diagnosis of TBM apply to HIV-infected children. The presence of nodular meningeal disease in all HIV-infected children has not previously been reported and requires further investigation.
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