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目的 探讨肺孤立性炎性结节的CT特征。方法 回顾性分析 2 3例经手术病理或临床证实的肺内单发炎性结节的CT表现。全部患者行螺旋CT平扫及增强扫描 ,结节范围行薄层靶扫描 ,多平面重建。除常规肺窗、纵隔窗观察外 ,调节窗宽、窗位以显示结节特征。结果 所有结节均无钙化、卫星灶、血管集束及肺门、纵隔淋巴结肿大。结节大小 10mm× 15mm～ 3 0mm× 40mm ,以类圆形和不规则为主。浅分叶 3例 ,无分叶 2 0例。有毛刺者 2例 ,充血征、模糊征阳性 19例 ,胸膜反应性增厚 18例 ,增强扫描不均匀边缘强化 18例 ,无强化者 5例。窗宽 10 0 0～ 2 0 0 0 ,窗位 -4 0 0左右 ,病灶周围渗出性改变的显示最佳。多平面重建 (MPR)显示结节形态及与胸膜的关系最为准确。结论 肺内孤立性炎性结节具有较明显的CT特征 ,综合分析各种表现 ,绝大多数能做出正确诊断。窗宽、窗位的选择及MPR对显示结节特征有很大帮助
Objective To investigate the CT features of solitary pulmonary inflammatory nodules. Methods A retrospective analysis of 23 cases of pathologically confirmed or clinically confirmed single lung inflammatory pulmonary tuberculosis CT findings. All patients underwent spiral CT scan and enhanced scanning, nodular line scan thin layer, multiplanar reconstruction. In addition to conventional lung window, mediastinal window observation, adjust the window width, window level to show nodular features. Results None of the nodules calcified, satellite lesions, vascular bundles and hilar and mediastinal lymph nodes. Nodule size 10mm × 15mm ~ 3 0mm × 40mm, mainly round and irregular. 3 cases were shallowly divided and 20 cases were non-divided. There were 2 cases of burr, congestion sign, 19 cases of positive sign of blurring, 18 cases of thickened pleural reaction, 18 cases of enhanced edge enhancement and 5 cases of no enhancement. Window width 100 ~ 2000, window level -4 0 0 around the exudate changes around the lesion showed the best. Multiplanar reconstruction (MPR) showed the most accurate nodule morphology and pleural correlation. Conclusion Solitary pulmonary nodules have obvious features of CT, comprehensive analysis of various performance, the vast majority can make the correct diagnosis. The choice of window width, window level and MPR is very helpful for displaying nodular features