[Study on correlation between chest X-P course findings and change in antinuclear antibody in asbestos plant...

In order to investigate the correlation between a course of chest radiograms and changes in antinuclear antibody (ANA), 140 asbestos workers who had a chest radiogram and measurement of ANA in 1987 and had been working in the same plant were given the same examination again in 1992. In the group who showed a change in ANA to positive, the progression of pulmonary asbestosis was significantly higher than in the group who remained negative. Progression in pleural lesions was not significantly correlated.