Abstract
A total of 124 coal workers and ex-coal workers receiving disability benefit for coal worker's pneumoconiosis and routinely reattending the Cardiff Pneumoconiosis Medical Panel during a 10-week period were studied. Those with complicated pneumoconiosis were excluded. Their current chest radiographs and their chest radiographs at the time of certification were read in random order by three readers using the 1980 ILO Classification of Radiographs. An irregularity score was derived from the readings. The x-ray findings were examined for changes since certification and for relationships with age, smoking, and underground coal work exposure. One-fifth of the current radiographs showed mainly irregular opacities, whereas nearly all of those from the time of certification showed mainly irregular opacities, whereas nearly all of those from the time of certification showed mainly rounded opacities. Irregular opacities were related to age, smoking, and underground exposure. The exposure effect remained after excluding the older men. The findings suggest that radiological irregular opacities, and their associated pathology and lung function changes, commonly develop in coal workers with pneumoconiosis and should be considered part of the condition.
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Selected References
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- Amandus H. E., Lapp N. L., Jacobson G., Reger R. B. Significance of irregular small opacities in radiographs of coalminers in the USA. Br J Ind Med. 1976 Feb;33(1):13–17. doi: 10.1136/oem.33.1.13. [DOI] [PMC free article] [PubMed] [Google Scholar]
- COCHRANE A. L., THOMAS J. CHANGES IN THE PREVALENCE OF COALWORKERS' PNEUMOCONIOSIS AMONG MINERS AND EX-MINERS IN THE RHONDDA FACH 1951-61. Br J Ind Med. 1965 Jan;22:49–57. doi: 10.1136/oem.22.1.49. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kennedy M. C. Nitrous fumes and coal-miners with emphysema. Ann Occup Hyg. 1972 Nov;15(2):285–301. doi: 10.1093/annhyg/15.2-4.285. [DOI] [PubMed] [Google Scholar]
- Lyons J. P., Ryder R. C., Campbell H., Clarke W. G., Gough J. Significance of irregular opacities in the radiology of coalworkers' pneumoconiosis. Br J Ind Med. 1974 Jan;31(1):36–44. doi: 10.1136/oem.31.1.36. [DOI] [PMC free article] [PubMed] [Google Scholar]
- MANTEL N., HAENSZEL W. Statistical aspects of the analysis of data from retrospective studies of disease. J Natl Cancer Inst. 1959 Apr;22(4):719–748. [PubMed] [Google Scholar]
- Musk A. W., Cotes J. E., Bevan C., Campbell M. J. Relationship between type of simple coalworkers' pneumoconiosis and lung function. A nine-year follow-up study of subjects with small rounded opacities. Br J Ind Med. 1981 Nov;38(4):313–320. doi: 10.1136/oem.38.4.313. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rogan J. M., Attfield M. D., Jacobsen M., Rae S., Walker D. D., Walton W. H. Role of dust in the working environment in development of chronic bronchitis in British coal miners. Br J Ind Med. 1973 Jul;30(3):217–226. doi: 10.1136/oem.30.3.217. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rossiter C. E. Relation of lung dust content to radiological changes in coal workers. Ann N Y Acad Sci. 1972 Dec 29;200:465–477. doi: 10.1111/j.1749-6632.1972.tb40210.x. [DOI] [PubMed] [Google Scholar]
- Ryder R., Lyons J. P., Campbell H., Gough J. Emphysema in coal workers' pneumoconiosis. Br Med J. 1970 Aug 29;3(5721):481–487. doi: 10.1136/bmj.3.5721.481. [DOI] [PMC free article] [PubMed] [Google Scholar]