同部位肺炎性假瘤与肺癌CT鉴别诊断

The Differential Diagnosis by CT:The Same Site of Pulmonary Inflammatory Pseudotumor and Lung Cancer

目的:对照分析同部位肺炎性假瘤和肺癌CT影像特征,探讨其鉴别诊断价值。方法:搜集相同部位的68例肺炎性假瘤和68例肺癌CT资料,全部病例均行手术病理诊断证实。结果:中央型和周围型肺炎性假瘤与肺癌分别为10对和58对病例。中央型肺癌均有“癌头尾”征,中央型肺炎性假瘤段以上支气管通畅,无阻塞性肺炎征象。周围型肺癌呈“膨胀形态”征,周围型肺炎性假瘤呈“收缩形态”征,统计学上差异有非常显著性意义(P=0.000)。结论:根据肺炎性假瘤和肺癌各自有的CT形态和征象,可以提高鉴别诊断的准确性。

Objective To comparatively analyze the CT characteristic of pulmonary pseudotumors and lung cancers in the same sltes,and to investigate the value on their differential diagnosis. Methods The CT data of 68 patients of pulmonary inflammatory pseudotumors and 68 patients of lung cancers were collected retrospectively; all patients were confirmed by pathology. Results All the pulmonary pseudotumors and lung cancers were classified into 10 couples central and 58 couples peripheral ones according to their sites. The central bronchogenic cancers usually appeared ＂the head and tail of cancer＂ sign,otherwise, the central inflammatory pseudotumors did not involve the bronchi, and the obstructive pneumonia was usually not found. The peripheral lung cancers usually appeared ＂expanding contour＂ sign,but the pul- monary inflammatory pseudotumors appeared ＂contracting contour＂ sign. Conclusion The CT characteristic of pulmonary pseudotumor and lung cancer can help us effectively in the differential diagnosis of them.