Objective To explore the application value of CT images examination in the diagnosis of pulmonary tuberculosis with lung cancer. Methods 60 patients diagnosed as pulmonary tuberculosis and lung cancer , 60 patients with pulmonary tuberculosis were randomly selected from October 2009 to October 2012 in our hospital . And all the patients were performed CT scan before, the imaging performance of two groups were compared. Results Lobulation, Mao Cizheng, vacuole sign, pleural indentation sign accounted for 68.3%, 53.3%, 25%and 78.3%of pulmonary tuberculosis with lung cancer patients, higher than that of pulmonary tuberculosis patients in 26.7%, 15%, 8.3%and 43.3%, empty sign (26.7%) was signiifcantly less than in patients with pulmonary tuberculosis (36.7%); the differences were statistically significant (P<0.05). Conclusion CT examination diagnosis is of guiding significance for pulmonary tuberculosis with lung cancer, abnormal imaging features on clinical pulmonary tuberculosis patients, should be highly suspected lung cancer may be based on clinical manifestations, identiifcation, to prevent missed diagnosis, misdiagnosis.%目的分析CT影像学检查在肺结核合并肺癌诊断中的应用价值。方法随机抽取2009年10月-2012年10月就诊并确诊为肺结核合并肺癌的患者60例，单纯肺结核患者60例。患者之前均进行了CT平扫，对两组患者的影像学表现进行对比分析。结果肺结核合并肺癌患者中出现分叶征、毛刺征、空泡征以及胸膜凹陷征分别占68.3%、53.3%、25.0%和78.3%，高于单纯肺结核患者的26.7%、15.0%、8.3%和43.3%，空洞征(26.7%)则明显少于单纯肺结核患者(36.7%)；差异均有统计学意义（P<0.05）。结论 CT检查对于肺结核合并肺癌的诊断具有指导意义，临床上有异常影像特征的肺结核患者，应高度怀疑合并肺癌的可能，需结合临床表现做出鉴别，以防漏诊、误诊。
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