Abstract
Tuberculous Meningitis (TBM) is the most severe form of extrapulmonary tuberculosis. The clinical spectrum is broad and may be non-specific making early diagnosis difficult. This increases the incidence of mortality. We describe the clinical characteristics of patients with TBM in Dr. Lucio Córdova's Infectious Disease Hospital in Santiago, Chile, between 1995 and 2002. We review 53 adult cases of TBM, with a median age of 39 years. At admission 66% of the patients had some mental status deterioration, and the classic triad of symptoms of meningeal irritation was present only in 30%. The cerebrospinal fluid (CSF) examination showed increased protein level, low glucose level and lymphocytic pleocytosis in most. Thirty percent of the patients were coinfected with HIV. The mortality in the later group was greater than in the TBM population as a whole (31 vs 17%). TBM is still a present diagnostic problem, in spite of the new diagnostic methods. A high index of suspicion is required in order to make an early diagnosis.
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