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患者男,52岁。1964年1月至1965年12月,曾在解放军某部服役,在国防工程施工中担任隧道凿岩的风钻操作工,当时未测定作业环境的粉尘浓度,但据患者本人回忆隧道内岩尘飞扬,伸手不见五指,工作时没有采取任何防护措施。1966年初转业到某县电机厂当钳工,没有再接触生产性粉尘。自1968年以来,患者在重体力劳动时感到气短,稍休息即行消失,后来病情进展,气短加重,并有咳嗽、咳痰。1984年5月因长期严重咳嗽、咳痰入院,经临床各项检查排除肺癌和肺结核等病,X胸片表现为高密集度二级,r类圆形小阴影,布满6个肺区,根据我国1986年尘肺X线分类标准诊断为二期矽肺,并进行长期观察。随后分别于1986、1987、1988、1991年进
Male patient, 52 years old. From January 1964 to December 1965, a former aircrew operator who served in a certain PLA unit and worked as a tunneling drill in the construction of a national defense project did not measure the dust concentration in the operating environment at that time. However, according to the patient himself, , Out of reach, did not take any protective measures at work. At the beginning of 1966, he was transferred to a county motor factory as a fitter and no longer contacted with productive dust. Since 1968, the patient felt short of breath while taking heavy manual labor and disappeared after a short rest. Later, his condition progressed, the shortness of breath increased, and there was cough and sputum. 1984 May due to long-term severe cough, sputum admission, clinical tests to rule out lung cancer and tuberculosis and other diseases, X chest X-ray showed high concentration of two rounds, r small circular shadow, covered with six lung areas, According to China’s pneumoconiosis in 1986 X-ray classification criteria for the second stage of silicosis, and long-term observation. Then in 1986, 1987, 1988, 1991 respectively