Coalworkers' pneumoconiosis.
D003032:Coal Mining; D006801:Humans; D008168:Lung / Q000473:pathology; D008297:Male; D009784:Occupational Diseases / Q000000981:diagnostic imaging*; D011009:Pneumoconiosis / Q000000981:diagnostic imaging*; D011656:Pulmonary Emphysema / Q000473:pathology; D011859:Radiography