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脱离有粉尘危害的环境以后发生的矽肺,称晚发性矽肺。国内外资料均有报导。据我们观察,晚发性煤矽肺在三都地区四个煤矿1963年至1970年检出的煤矽肺新病例中占7.09%～10.13%(1)。为了探索晚发性煤矽肺的发病特点及其X线征象,我们选择了有烟煤矿与无烟煤矿两组此类病例共24例进行了分析,以提高对此类煤矽肺的认识,进一步做好煤矽肺的防治工作。材料来源从兴无矿务局三部地区四个煤矿和湘永煤矿现有的煤矽肺病例中,按以下三个条件选择病例作为本文的分析对象: 1.脱离粉尘作业后发生的煤矽肺,在脱离粉尘作业时或脱离后有“正常范围”胸片者,在诊断为煤矽肺前1～2年有“可疑煤矽肺”或“正常范围”胸片者。2.职业史可靠,记录较详尽。
Silicosis, which occurs after a dust-damaging environment, is called late silicosis. Domestic and foreign information has been reported. According to our observation, late-onset coal silicosis accounts for 7.09% -10.13% of new cases of coal silicosis detected in the four coal mines in Sandu from 1963 to 1970 (1). In order to explore the incidence of late onset of silicosis and X-ray signs, we have selected a bituminous coal and anthracite coal mine two cases of such cases were analyzed in a total of 24 cases in order to improve understanding of such coal silicosis to further improve Prevention and treatment of coal silicosis. Material Sources From the existing coal-silicosis cases of the four coal mines in the three areas of Xing-Mu Mines Bureau and the Xiang Yong Mine, the cases were selected as the objects of analysis for the following three conditions: 1. Coal-silicosis, In the dust from the operation or from the “normal range” chest X-ray, in the diagnosis of coal silicosis 1 to 2 years ago, “suspicious coal silicosis” or “normal range” chest X-ray. 2. Occupational history is reliable, more detailed record.