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Research Article Open access CC BY 3.0

Chest Radiographic Patterns of Smear Positive Tuberculosis in Relation to HIV: A Cross-Sectional Study in a Population with a High Burden of HIV and Tuberculosis

Assefa Getachew, Jonna Idh, Samuel G/Sillasie, Thomas Schön

Journal of Advances in Medicine and Medical Research · pp. 5474–5483 · Published 30 Jul 2014

10.9734/BJMMR/2014/7308

Abstract

Aim: The purpose of this study was to investigate the chest radiographic patterns of smear positive pulmonary tuberculosis patients in relation to HIV co-infection. Study Deign: Cross-sectional descriptive study Place and Duration of the Study: The study was conducted at Gondar University hospital between May 2004–December 2007. Methodology: We studied chest radiographs of 207 (128 HIV negative and 79 HIV positive) consecutive sputum smear positive pulmonary tuberculosis patients according to the standard classification. Mean and percentages/ proportions were used for descriptive analysis. Chi square test was used to measure association. Results: The prevalence of HIV in patients with smear positive pulmonary tuberculosis was 38.2%. The most common chest radiographic patterns were fibronodular (83.1%), cavity (60.4%), lobar consolidation (49.8%), and brochopnemonic consolidation (9.2%). Lymphadenopthy and pleural effusion were more common in HIV co infected patients (p<0.01). Cavities, upper lobe disease and increased mean number of lung lobes involved were more prominent in HIV negative patients (P<0.05). Despite a higher rate of patients with far advanced CXR patterns in HIV negative TBC patients compared to HIV positive (p<0.026), there was no significant difference in the radiographic, sputum smear conversion or clinical response in terms of increased body mass index after 8 weeks of anti TBC treatment between HIV negative and HIV positive patients. Conclusion: Post primary pulmonary tuberculosis was the commonest chest radiographic pattern at presentation in both HIV positive and HIV negative patients, but atypical chest radiographic presentations were associated with co-infection. It was more common for HIV negative tuberculosis patients to have a radiologically far advanced pattern which did not correspond to the clinical and radiological response. This may prompt a need for revision of the current radiological classification.

Pulmonary tuberculosis utum smear positive tuberculosis chest radiography HIV co infection.

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