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《Hainan Medical Journal》 2012-11
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The reasons of pulmonary tuberculous misdiagnosed as lung cancer on the CT appearances

GENG Xing-dong, TIAN Zhong-fu, SHU Chang-qing. Traditional Chinese Hospital of Yangzhong, Zhenjiang 212200, Jiangsu,CHINA  
Objective To analyze the reasons of pulmonary tuberculosis misdiagnosed as lung cancer on the CT appearances. Methods Clinical data and CT findings of 19 cases of pulmonary tuberculosis were performed CT plain scans, and CT enhanced scanning. All of the cases were conformed by clinical results or pathology. Results Among 19 patients, 15 cases were over 50 years old (84.2). The atypical CT appearances of pulmonary tuberculosis were induced by immunocompromised patients. The CT appearances of nodule or mass of pulmonary tuberculosis were found in 15 patients, while the CT appearances of patchy consolidation or atelectasis of pulmonary tuberculosis could be seen in 2 patients, with mediastinal and pulmonary hilar lymph nodes enlargement in 9 patients. 19 patients underwent contrast-enhanced CT scan, and the differences of CT values before and after contrast injection were more than 26HU in 2 patients . Conclusion The variable CT findings of pulmonary tuberculosis in the elderly or immunocompromised patients is the main reason of misdiagnosis, and improving understanding of comprehensive analysis of all imaging features and clinical data can reduce the CT misdiagnosis rate.
【CateGory Index】: R521
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