Multi-drug-resistant tuberculosis natural history, complications and prognosis
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Differentiating Multi-drug-resistant tuberculosis from other Diseases |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]
Overview
Natural History
Tuberculosis has been classified as primary or secondary (post primary) infection. It can have pulmonary and extra pulmonary manifestations as well as severe parenchymal, vascular, pleural and chest wall complications. Pulmonary complications include pleural effusions, cavitations, lymphadenopathy, airway obstruction, pneumonia and bronchiectasis. The hematogenous dissemination of infection can lead to miliary tuberculosis. The post primary infection can be due to a recent infection or reactivation of an old infection. Without treatment, 1/3 of patients with active tuberculosis dies within 1 year of the diagnosis, and more than 50% during the first 5 years. But with early diagnosis and treatment it has a good prognosis.