High prevalence of silicosis among stone carvers in Brazil.
Antão-VC; Pinheiro-GA; Kavakama-J; Terra-Filho-M
Am J Ind Med 2004 Feb; 45(2):194-201
In the city of Petrópolis, Brazil, artisans carve souvenirs from a variety of silica-containing minerals. The finding of pulmonary massive fibrosis in one of the workers motivated an investigation of the prevalence of silicosis in this group. Between January 2000 and June 2002, a cross-sectional study was performed. We obtained clinical and occupational histories, spirometry, lung volumes, and carbon monoxide diffusion capacity measurements. Chest radiographs and high-resolution computed tomographies (HRCT) were evaluated. Personal air samples were analyzed. Forty-two stone carvers were examined. The prevalence of silicosis was 53.7%. HRCT better characterized silicotic lesions compared to chest radiographs. Early coalescence of small opacities was associated with lung function impairment. The concentration of dust exceeded permissible limits in 91% of the workplaces. Exposure to high levels of silica dust was associated with an increased prevalence of silicosis among stone carvers.
Stone-processing; Stone-products; Silica-dusts; Silicosis; Artists; Arts-and-crafts; Minerals; X-ray-diagnosis; Exposure-levels; Exposure-limits; Air-sampling; Lung-function; Respiratory-system-disorders; Pulmonary-system-disorders; Diagnostic-tests; Quartz-dust;
Author Keywords: silicosis; Brazil; stone carving; HRCT; ILO reading; lung function; air sampling
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American Journal of Industrial Medicine