[ 关键词 ] 无临床症状;肺老化;吸烟;高分辨率 CT[ 中图分类号 ] R563 [ 文献标识码 ] A [ 文章编号 ] 1674-0742 ( 2017 ) 03 ( b ) -0004-05Analysis of Lung HRCT Signs of Male Smokers without Clinical SymptomsAged more than 50SHI Wei-ya 1 , HANG Jing-qing 2 , SUN Jing 1 , ZHANG Feng-ying 21.Department of Respiration, Putuo District People ’ s Hospital, Shanghai, 200060 China ; 2.Department of RespirationMedicine, Putuo District People ’ s Hospital, Shanghai, 200060 China[Abstract] Objective To research the lung HRCT signs of male lung aging with or without smoking thus improving theawareness of lung aging and lung changes after smoking. Methods Group selection 145 cases of males over 50 years oldwith chest symptoms and without chest disease history in our hospital from May 2015 to March 2016 were for healthy physi-cal examination and divided into two groups according to whether they had the smoking history or not, namely the non-smoking group with 49 cases and smoking group with 96 cases and the smoking group were divided into three subgroups ac-cording to different smoking indexes, the smoking group A (29 cases, smoking index < 400), smoking group B ( 31 cases,400≤smoking index<800) and smoking group C (36 cases, smoking index ≥800), and the lung signs included that emphy-sema, pulmonary nodules, ground glass opacity, bronchial wall thickening, bronchiectasis, mosaic like perfusion, interlobularseptal thickening, abnormal reticular shadow, consolidation, calcification, and the emphysema degree and distribution weregiven the quantitative analysis, and various indexes were statistically analyzed. Results The imaging signs whose lung occur-rence rate was higher in chest physical examiners without symptoms were interlobular septal thickening and emphysema, re-spectively accounted for 57.24% and 51.03%, and the positive rate of mosaic perfusion sign in the non-smoking group wasthe highest (38.78%), and the 75 th % of emphysema score in the smoking C group was higher than that in the other groups,and the differences in the upper, middle and lower lung emphysema scores between various smoking groups had no statisti-cal significance, but in the non-smoking group, the 75 th % of lower lung emphysema score was higher than that of middlelung emphysema score and the 75 th % of middle lung emphysema score was higher than that of upper lung emphysemascore. Conclusion There are many similarities between imaging signs of lung aging and smoking lung, and the mosaic per-fusion sign, emphysema degree and distribution can be used to identify the lung aging and smoking lung.[Key words] Without clinical symptoms; Lung aging;Smoking; High resolution CT[ 作者简介 ] 史维雅( 1981- ),女,浙江宁波人,硕士,主治医师,研究方向:胸部影像诊断。4 China&ForeignMedicalTreatment 中外医疗中外医疗2017 NO.8China &Foreign Medical Treatment论 著随着人口老龄化及大气污染, 肺部逐渐出现功能和形态的退行性改变,老年性肺部病变增加,但肺老化与其它间质性病变早期难以鉴别; 吸烟也是引起多种呼吸系统疾病的重要原因, 且与肺老化的影像学表现有不少相似之处。 该研究应用高分辨率 CT (HRCT) 对2015 年 5 月— 2016 年 3 月来该院放射科进行健康体检且无胸部症状及无胸部疾病史的 145 名男性进行扫描,评价 50 岁以上无临床症状的男性伴或不伴吸烟者的肺部征象的改变, 探讨吸烟后肺改变及其与正常老年肺退行性改变的异同点, 提高对肺老化及吸烟后肺改变的认识。