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SAMJ: South African Medical Journal

versão On-line ISSN 2078-5135
versão impressa ISSN 0256-9574


SEDICK, Q; VAUGHAN, J; PHEEHA, T  e  ALLI, N A. Bone marrow aspirate microscopy v. bone marrow trephine biopsy microscopy for detection of Mycobacterium tuberculosis infection. SAMJ, S. Afr. med. j. [online]. 2015, vol.105, n.9, pp.773-775. ISSN 2078-5135.

BACKGROUND: Tuberculosis (TB) remains a global health problem. According to the 2013 Global Report on Tuberculosis, 8.6 million people developed TB in 2012 and 1.3 million died from the disease. An estimated 13% of people who developed TB in 2012 were HIV-positive, and 75% of these lived in Africa. While pulmonary TB is the commonest form of Mycobacterium tuberculosis infection, extrapulmonary TB is increasingly being detected in HIV-positive patients. Definitive diagnosis of disseminated TB is a challenge owing to atypical presentations and diagnostic difficulties (negative chest radiograph and sputum microscopy and culture). A rapid diagnosis of disseminated TB is desirable, as early initiation of treatment can reduce mortality. Although TB culture is the gold standard for diagnosis of TB, it has a long turnaround time (up to 6 weeks OBJECTIVES: To identify a potentially faster and more effective diagnostic strategy for disseminated TB METHODS: A retrospective 18-month review, conducted at a tertiary hospital, comparing histological findings of an auramine O-stained bone marrow aspiration (BMA) smear and a bone marrow trephine (BMT) biopsy specimen with the gold standard of TB culture RESULTS: Microscopic examination of BMA smears and BMT biopsy specimens offers a rapid diagnostic strategy, with results available on the same day for the former and within 4 days for the latter. BMT histological examination had a significantly higher detection rate than BMA auramine O staining compared with TB culture CONCLUSION: We recommend that BMT biopsies remain an essential part of the diagnostic work-up for disseminated TB

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