ENGLISH ABSTRACT
JOURNAL ARTICLE
REVIEW
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[Value of assaying adenosine deaminase level in patients with neuromeningeal tuberculosis].

Neuromeningeal tuberculosis is a rare extrapulmonary location in France. Delayed diagnosis can lead to therapeutic failure and severe sequels. However early diagnosis is a major challenge that requires the proper epidemiological, clinical, radiological and biological resources. Problems related to diagnosis of mycobacteria infection and to shortcomings in certain healthcare systems can hinder early diagnosis. The purpose of this review was to describe the diagnostic value of assaying adenosine deaminase activity in cerebrospinal fluid from patients with neuromeningeal tuberculosis. Evidence from studies published over the last 25 years indicate that the sensitivity and specificity of measuring adenosine deaminase activity range from 36 to 92% and 71 to 100% respectively depending of cutoff values used. Before performing this assay, it is necessary to rule out obvious or frequent etiologies such as purulent bacterial meningitis or cryptococcosis in HIV patients. Taken together these studies show that this simple, inexpensive technique is a valuable tool for early diagnosis and management of tuberculosis patients and that it can be easily implemented in hospital labs regardless of technical or financial resources.

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