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《Radiologic Practice》 2018-04
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Comparative study of MSCT diagnosis between lung cancer with thin-walled cystic airspaces and thin-walled cavitary tuberculosis

DAI Ping;OU Guang-qian;Liu Yong;Department of Radiology,the Traditional Chinese Affiliated Hospital of Southwest Medical University;  
Objective:To comparatively analyze the MSCT findings of lung cancer with thinwalled cystic airspaces and thin-walled cavitary tuberculosis,thus to improve the ability of diagnosis and differential diagnosis.Methods:The basic clinical data and MSCT findings of 28 cases with lung cancer with thin-walled cystic airspaces and 30 thin-walled cavitary tuberculosis confirmed by pathology or clinical data from 2011 to 2017 were retrospectively and comparatively analyzed.Theχ2 test or Fisher's exact probability method were used for the statistical analysis.Results:There was no statistical difference in the gender composition,the size of lesion and air space between the two groups.The mean age of lung cancer group was higher than that of cavitary tuberculosis group,there was statistical difference(P0.001).The wall thickness of cystic airspaces of lung cancer group was less than that of cavitary tuberculosis group.Most of tuberculosis occurred in the upper lung.The ratio of ground glass opacity,lobulation,short speculation,well defined and unsmooth interface,unsmooth inner wall,septum inside the airspace,mural nodule and honeycomb sign was higher in lung cancer group than that in the cavitary tuberculosis group with statistical difference(P0.05).The ratio of long speculation,smooth inner wall,satellite lesions,type Ⅲ of morphological patterns was higher in the cavitary tuberculosis group than that in lung cancer group with statistical difference(P0.05).In follow-up study,the air space wall thickened irregularly and the mural nodule enlarged in lung cancer group,but the cavity shrunk in tuberculosis group.Conclusion:There are certain differences in the CT features between lung cancer with thin-walled cystic airspaces and thin-walled cavitary tuberculosis,CT is quite helpful in differential diagnosis of the two diseases.
【CateGory Index】: R521;R730.44;R734.2
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