Particularités radiologiques de la tuberculose pulmonaire à microscopie positive au Service de Pneumologie du Centre Hospitalier National Universitaire de FANN (CHNUF), Dakar (Sénégal)
2018
This study aimed to determine the radiological features of microscopy-positive pulmonary tuberculosis (TB). We conducted a retrospective study, analyzing radiographical imaging of patients with microscopy-positive pulmonary tuberculosis between 15 November 2015 and 15 March 2016. The medical records of 66 patients meeting the inclusion criteria were selected, 81.8% of which belonged to men. The average age of patients was 37.5 ± 14.9 years. Patients had variable parenchymal lesions dominated by infiltrated lesions in 84.8% (CI 95%; 73.9-92.4%) of cases, followed by alveolar syndrome in 68.2% (CI95%; 55.5-79.1%) of cases. Lesions were extensive in 71.2% (CI 95%; 58.7-81.7%) of cases and bilateral in 45.4% (CI 95%; 31.1-58.1%) of cases. These radiological abnormalities occurred in 52.2% (CI 95%; 36.9 - 67.1%) of cases in undernourished patients. In 22.7% (CI 95%; 13.3-34.7%) of cases, these lesions were secondary to an episode of pulmonary tuberculosis; 34.8% (IC95; 23.5 - 47.5%) of patients were regular tobacco smokers consuming, on average, 17 tobacco packs per year (±11.3). TB recurrences were more frequent in patients with a history of smoking versus non-smokers (26.1% versus 20.9%, p < 0.42 respectively). HIV-1 serology test was positive in 7.6% of cases. This study highlights the importance of suspecting pulmonary tuberculosis in young undernourished patients, having a history of smoking, with infiltrated lesions associated or not with cavitary lesions on radiographic examination and living in TB epidemic area.
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