目的 分析胞内分枝杆菌肺病与堪萨斯分枝杆菌肺病的胸部CT影像特征差异。方法 收集天津市海河医院胞内分枝杆菌肺病(A组)和堪萨斯分枝杆菌肺病(B组)各70例胸部CT图像,分析比较两组CT特征差异。结果 2组在性别、年龄上差异有统计学意义,A组小叶中心结节及树芽征、结节、厚壁空洞、支气管扩张比例均大于B组,A组薄壁空洞占比小于B组。A组分布在右肺上、下叶的空洞多于B组,右肺中叶支气管扩张少于B组。A组分布在右肺中叶、下叶及左肺上叶舌段、下叶的支气管扩张占比较B组多。结论 胞内分枝杆菌肺病病灶较堪萨斯分枝杆菌肺病多,以支气管扩张尤为明显,堪萨斯分枝杆菌肺病薄壁空洞较为显著。

Objective To compare and analyze CT imaging features differences between Mycobacterium intracellulare pulmonary disease and Mycobacterium kansasii pulmonary disease. Methods The CT images of 70 cases with Mycobacterium intracellulare lung disease(group A) and 70 cases with Mycobacterium kansasii lung disease(group B)were collected. The CT features of the two groups were compared by statistical analysis. Results The differences of gender and age between the two groups were statistically significant. The central nodule and tree-in-bud, nodule, thick wall cavity and bronchiectasis incidences in group A were more than those in group B. The thin wall cavity incidence in group A was less than those in group B. The number of cavities in the upper and lower lobe of the right lung in group A was bigger than group B,and the proportion of bronchiectasis in the middle lobe of the right lung in group A was less than those of group B. The bronchiectasis in the middle, lower lobe of right lung and upper lobe lingual segment and lower lobe of left lung in group A were more than those in group B. Conclusion The pulmonary lesion number of Mycobacterium intracellulare was bigger than that of Mycobacterium kansasii, especially bronchiectasis. The thin wall cavity of Mycobacterium kansasii pulmonary disease is more obvious.