肺炎性假瘤的CT影像表现与误诊原因

目的探讨肺炎性假瘤的CT影像表现及误诊原因,提高诊断水平。方法对35例经手术病理证实的肺部炎性假瘤的CT影像表现进行系统回顾性分析。结果肺炎性假瘤多位于肺野外周,局限于一叶,形态多不规则,病灶常呈广基底贴于胸膜并且邻近胸膜增厚,可见＂桃尖征＂、＂平直征＂、＂晕征＂等特征性表现,增强扫描多为高度均匀性强化,病灶经抗炎治疗后可缩小或无变化。术前诊断正确11例,误诊为周围型肺癌17例,结核球4例,肺错构瘤2例,肺脓肿1例,误诊率71.4%。结论全面综合地分析肺炎性假瘤CT表现特征并结合临床资料可提高肺炎性假瘤影像诊断的正确率,减少误诊。

CT Imaging Findings and Misdiagnosis Causes of Pulmonary Inflammatory Pseudotumor

Objective]To investigate the CT imaging findings and misdiagnosis causes of pulmonary inflammatory pseudotumor,so as to improve the diagnosis level. Methods]CT imaging findings of 35 cases of pulmonary inflammatory pseudotumor which were confirmed by operation and pathology were analyzed retrospectively. Results]The pulmonary inflammatory pseudotumor mainly located in peripheral lung field,and was limited in one pulmonary lobe with irregular shape.Broad-base lesions often affixed to the pleura with adjac...