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例一、患者,男,51岁。1956年4月至1959年10月任解放军某部工程兵坑道掘进风钻兵(高浓度岩石矽尘作业,无防护设备),1960年转业大庆油田会战,1965年又转战胜利油田,1975年调至石油管道系统至今。从1960年转业后从不接触矽尘工作。患者从1970年起出现干咳,经X线胸透及摄片检查未见任何征象,临床均以“上感”诊治。自1975年3月自觉胸闷、气短,1976年在综合性医院做一般性体检时,X线胸透报告:两肺纹理增多,临床仍按“慢支”治疗。患者从此戒除吸烟嗜好。但从1985年起自觉症状逐日
Example 1, patient, male, 51 years old. From April 1956 to October 1959, he was appointed as one of the engineers of a certain unit of the People’s Liberation Army (PLA) to carry out tunneling of wind tunnel soldiers (high-concentration rock silico-dust work and no protective equipment). In 1960, he moved to Daqing Oilfield to make a battle and in 1965 he moved to Shengli Oilfield. In 1975, Pipe system to date. Since 1960, never contact with silica dust work. Patients from the 1970 dry cough, chest X-ray and radiographic examination showed no signs of clinical are “sense” diagnosis and treatment. Since March 1975, conscious chest tightness, shortness of breath, in 1976 in a general hospital for general medical examination, X-ray reports: increased lungs, the clinical still according to “chronic bronchitis” treatment. Patients quit smoking habit from then on. However, since 1985, conscious symptoms day by day