Radiological survey of tuberculosis in an isolated Indian population in Central Brazil

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open access
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2002
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Radiological Society of North America
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Universidade Federal de São Paulo. São Paulo, SP, Brasil.
Harvard University. Cambridge, MA, USA.
Universidade Federal de São Paulo. São Paulo, SP, Brasil.
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Abstract
Abstract
PURPOSE: To search for tuberculosis in the Xingu Indian Reserve with chest radiography, correlated to sputum microscopy. METHOD AND MATERIALS: Two-hunded-and-fifteen indians (age:l-80 years) presenting chroniccoughor othersymptoms(weightloss, adenopa thy, repeated fever episodes) sugestive of tuberculosis, or with previous lustory of tuberculosis had frontal and lateral chest radiographs. Subjects were brought from 16different villages by airplane or boat, to be examined in a medical facility inside the reserve. A portable X-ray equipment (300mA) was installed and manual film processingwas performed. RESULTS: Fifty-one subjects (24%) presented abnormal findings on chest / radiographs, and 30 (14%) had pulmonary abnormalities. Pulmonary findings included:infiltrates (n=19), nodules(n=6),enlargedhilar lymph nodes (n=4), pleural effusion(n=4), pleural thickening (n=3) and fibrous bands (n=l). Clinical arid radiological diagnosis of tuberculosis was made in 11 subjects, but only 5 had positive sputum microscopy. All patients with positive sputum presented pulmonary infiltrates (alveolar, intersticial or micronodular), and pleural effusion was also seen in one patient. Four patients with negative sputum had pulmonary infiltrates (intersticial in 3 and intersticial/alveolar in 1) and 2 presented pleural involvement (effusion and thickening). CONCLUSIONS: These data suggested an epidemicof tuberculosis in the studied indian population (6cases per 1000 subjects). Lowpositive sputum findings in this population, as suggested by previous investigators, increases the importance of radiography for diagnosis.
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To search for tuberculosis in the Xingu Indian Reserve with chest radiography, correlated to sputum microscopy. These data suggested an epidemicof tuberculosis in the studied indian population (6cases per 1000 subjects). Lowpositive sputum findings in this population, as suggested by previous investigators, increases the importance of radiography for diagnosis.
Keywords in Portuguese
Mato Grosso, Região Amazônica, Região Centro-Oeste, Parque Indígena do Xingu
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DeCS
Brasil, Índios Sul-Americanos, Ecossistema Amazônico, Saúde de Populações Indígenas, Tuberculose, Diagnóstico da Situação de Saúde em Grupos Específicos, Diagnóstico
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KOBAYASHI, F. K. et al. Radiological survey of tuberculosis in an isolated Indian population in Central Brazil. Radiology, v. 225 (Supplement), p. 142, Nov. 2002.
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0033-8419
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