규폐증의 단순 흉부방사선학적 소견: ILO 1980 분류에 기초하여

Abstract

PURPOSE: The purpose of this study was to evluate the plain chest radiological findings of silicosis bases onILO 1980 classification. MATERIALS AND METHODS: Author studied the plain chest films of 200 patients withsilicosis in Taebaek district and silicotic lesions were classified based on ILO 1980 Classification. There were196 males and 4 females among them(mean age;56.2 years). The mean duration of dust exposure was 18.8 years. Smalland large opacities were classified according to their profusion, size and shape, and size category, respectively.Other associated findings were also analyzed. RESULTS: Amont 200 patients there were 153 cases of small opacitiesand 47 cases of large opacities. Category 2/2(21.6%) and q/q type(22.9%) were most common for small opacities,according to their profusion, size and shape, Category B is most common for large opacities increased withduration of dust exposure, Associated findings of hilar eggshell calcifications(5..5%), calcified silicoticnodules(3.5%), active pulmonary tuberculosis(10.5%) and pleural abnormality(9.0%) were domonstrated, too.CONCLUSION: Plain chest radiological findings of silicosis were fine irregular and/or round small opacities in theearly phase, but if advanced, large opacities of progressive massive fibrosis and focal emphysematous changeappeared in the upper lung fields. Hilar lymphadenopathy and eggshell calcifications, active pulmonarytuberculosis, pleural thickening and calcifications could be associated.