老年继发性肺结核病灶活动性的CT表现

CT manifestation of the activity of secondary pulmonary tuberculosis in elderly

目的研究老年继发性肺结核病灶活动性的常规CT及高分辨率CT（HRCT）的影像学特征。方法回顾性分析2010年6月至2014年3月确诊为继发性肺结核的老年患者76例，观察分析其常规CT及HRCT影像学特征。结果76例老年继发性肺结核中，CT主要表现为树芽征、边缘模糊的小叶中心结节及分支影、边缘模糊的腺泡结节、肺实变、空洞、磨玻璃样阴影，HRCT对分支线样结构、厚壁空洞、虫噬样空洞及多发空洞的显示优于常规CT，差异有统计学意义（P〈0．05）。结论老年继发性肺结核活动性病灶常见的CT表现有：树芽征、边缘模糊的小叶中心结节及分支影、边缘模糊的腺泡结节、肺实变、空洞、磨玻璃样阴影，其中空洞特别是虫噬样空洞合并树芽征及肺实变是具有特征性的表现，HRCT对老年继发性肺结核病灶活动性的评价有重要的价值。

Objective To study the conventional CT of senile pulmonary tuberculosis lesion ac- tivity and high resolution CT （HRCT） imaging features. Methods From June 2010 to March 2014, 76 elderly patients with secondary pulmonary tuberculosis were retrospeotively analyzed, the conventional CT and HRCT imaging features were observed. Results Seventy-six cases of senile pulmonary tuberculosis, CT mainly for the tree in bud, blurred edge centrilobular nodules and branch shadow, blurred edge acinar nodule, consolidation of lung, empty, ground glass opacity, HRCT on the branch line like structure, thick wall cavity, motheaten holes and multiple empty shows better performance than the conventional CT, the difference was statistically significant （P 〈 0. 05 ）. Conclusions CT findings of common lesions of active secondary pulmonary tuberculosis in elderly： tree in bud, blurred edge centrilobular nodules and branch shadow, blurred edge acinar nodules, pulmonary consolidation, cavity, ground glass opacity, which empty especially motheaten cavity combined with tree in bud and lung consolidation have features performance. HRCT has important value in evaluation of the activity of elderlv secondary nulmonarv tuberculous.