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目的：探讨总结高海拔地区肺结核的影像特点，更好的指导临床早期诊断。方法：回顾分析65 例西藏高原肺结核的影像特点，总结分析其征象及价值。结果：原发型肺结核3 例(5%)，影像表现边缘清楚、密度均匀的致密影，伴有淋巴结增大；侵润型结核 31 例(48%)，影像表现成分混杂的致密影，可见钙化及卫星灶；血行播散型结核27 例(42%)，影像表现两肺弥漫分布的结节影；纤维空洞肺结核4 例(5 %)，影像表现空洞、纤维化、支气管播散三大特征。结论：高原地区肺结核以侵润型和血行播散型为主，有特定的影像特点，可以用来进行诊断。

英文摘要:

Objective: To investigate the characteristics of medical imaging for the early diagnosis of pulmonary tuberculosis in highland. Methods: We retrospectively analyzed the features of medical imaging of 65 cases with pulmonary tuberculosis in Tibetan Plateau. Results: 3 cases (5%) were primary pulmonary tuberculo- sis. Pathological changes with clear margin and even density were found. Intumescent lymph nodes was concurrence. 31cases (48%) were infiltrative pulmonary tuberculosis. The density of the pathological changes is miscellaneous. Calcification and satellite could be found. 27cases (42%) were hematogenous disseminated pulmonary tuberculosis. Pervasive nodule in the two lung could be found. 4cases (5%) were fiber and cavitary pulmonary tuberculosis. Fiber, cavity and dissemination by bronchus were the characteristics in medical imaging. Conclusion: Invasion type and hematogenous disseminated type are the dominating type of pulmonary tuberculosis in Tibetan Plateau, with specific imaging features,which can be used for diagnosis of pulmonary tuberculosis.

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