[Treatment of tuberculous meningitis: marker of cure]

A 49-year-old male with tuberculous meningitis was reported. When admitted to our hospital with mild right hemiparesis, he was alert but he developed disorientation 7 days later. A diagnosis of tuberculous meningitis was reached because of elevated levels of adenosine-deaminase at 19.6U/liter in the cerebrospinal fluid. MRI showed a marked enhancement in the basal cisterns and an enhanced intraparenchymal lesion in the brainstem. Chronological changes of MRI findings did not closely correlate with the clinical course. Slight meningeal enhancement on MRI seems to remain for a long time without active tuberculous meningitis, and absence of the meningeal enhancement on MRI is not necessarily appropriate as a marker of cure of tuberculous meningitis.