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Meningeal tuberculosis. (a) Axial postcontrast brain CT shows typical thick enhancement of basilar cisterns. (b) Axial postcontrast T1-weighted MR images in a different patient ((b), (c), and (d)) demonstrate enhancing basilar exudates and leptomeningeal enhancement. A small tuberculoma in right temporal region (d) and hydrocephaly (more severe in left ventricle) and the evidence of prior craniotomy (Burr hole, left pneumoventricle) are also evident.
