CERTAIN UNUSUAL RADIOLOGICAL APPEARANCES IN THE CHEST OF COAL-MINERS SUFFERING FROM RHEUMATOID ARTHRITIS
CERTAIN UNUSUAL RADIOLOGICAL APPEARANCES IN THE CHEST OF COAL-MINERS SUFFERING FROM RHEUMATOID ARTHRITIS
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DOI:
10.1136/thx.8.1.29
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发表时间:
1953-01-01
期刊:
影响因子:
10
通讯作者:
CAPLAN, A
中科院分区:
文献类型:
--
作者:
CAPLAN, A
Some two years ago it was observed that the incidence of massive shadows in chest radiographs of coal-miners suffering from rheumatoid arthritis appeared to be unduly high. The observation was thought to warrant further investigation. From June, 1950, to April, 1952, of about 14,000 claimants for pneumoconiosis disablement benefit seen at the Cardiff Pneumoconiosis Medical Panel, 51 were found on examination to be suffering from rheumatoid arthritis, an incidence of about 0.4%. The original impression of the high incidence of massive shadows in arthritics was confirmed in that about 90% of the 51 cases showed massive fibrosis. This compares with an incidence of about 30% of massive fibrosis in all men examined. It was also noticed that in about 25% of the arthritics the radiological opacities in the chest were of a peculiar type and often easily distinguishable from the usual appearances of progressive massive fibrosis (PMF)(Fletcher, 1948). No reference has been found in the literature to this unusual radiological appearance, and this paper is presented with the object of drawing attention to the lung changes associated with rheumatoid arthritis in coal-miners.THE CHARACTERISTIC RADIOLOGICAL APPEARANCE The characteristic feature is the presence of multiple, well-defined, round opacities, 0.5 to 5 cm. in diameter, distributed throughout both lung fields but particularly at the periphery (Figs. 1-3). An important finding in these cases is that the back-. ground of simple pneumoconiosis is often slight or absent (category* 1 or 0). Evidence is also available that the opacities appear rapidly, that is, within months, and tend to remain stationary in most but not all cases. The differences between these appearances and those seen in progressive massive fibrosis are