MR of childhood tuberculous meningitis

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Abstract
MR imaging was performed on 27 children with stage II–III tuberculous meningitis for the specific purpose of examining the brainstem, as well as comparison with other CT features of the disease. In addition to defining the ischemic disturbances of basal ganglia and diencephalon more clearly, MR also demonstrates the frequent occurrence of parenchymal signal abnormalities in the brainstem and adjacent temporal lobes, which are invisible or uncertain on CT. Although the presence of brainstem abnormalities on MR correlated well with clinical findings of brainstem dysfunction, clinical staging on admission remains the best prognostic indicator in advanced TBM. We also review the MR features of basal exudation, hydrochephalus and tuberculoma.