title: Pneumoconiosis: the changes of peripheral airways.
abstract: Ultrathin bronchofiberscope (Olympus BF-1.8T) was applied to the observation of the peripheral airways of total 87 cases, including 73 cases of quartz-exposed and asbestos-exposed workers with/without pneumoconiosis (exposure groups), and 14 cases of controls. The changes of peripheral airways in exposure group of non-smokers was found, mainly to be pigmentation, elevation, irregularity and lustlessness on the surface of the bronchiole walls, and predominantly stenosis and ectasis of the lumen. The detectable rate was higher in peripheral airways than in central airways. Some changes existed in early stage and some had a tendency of increasing detectable rate with category progressing. Some factors such as smoking could influence the results of analysis.
authors.affiliation: Shanghai Institute of Labor Hygiene and Occupational Diseases, China.
authors.forename: Y B
authors.initials: YB
authors.lastname: Hu
authors.forename: Q L
authors.initials: QL
authors.lastname: Li
authors.forename: Y M
authors.initials: YM
authors.lastname: Jia
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.forename: D M
authors.initials: DM
authors.lastname: Chen
authors.forename: T X
authors.initials: TX
authors.lastname: Hu
mesh_terms: D000328:Adult; D000368:Aged; D001194:Asbestos / Q000009:adverse effects; D001980:Bronchi / Q000473:pathology*; D020680:Bronchoscopes; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000473:pathology*; D011650:Pulmonary Alveoli / Q000473:pathology*; D011791:Quartz / Q000009:adverse effects
chemical_list: D001194:Asbestos; D011791:Quartz