46例肺炎性假瘤CT误诊分析

目的：探讨肺炎性假瘤的影像特点及其误诊原因，方法：回顾分析46例经病理证实的肺炎性假瘤的CT表现，结果：40例误诊为肺癌（875），6例误诊为结核球或良性肿瘤（13％）。结论：CT诊肺炎性假瘤的诊断有一定的局限性；多发病灶或合并肺门纵隔淋巴结肿大者的诊断更为困难；没有活检，诊断时过分强调某个CT征象或临床症状，缺少综合分析是导致误诊的重要原因。

Analysis of CT misdiagnosis in 46 cases of inflammatory pseudotumour of the lung

Objective:To investigate the CT findings of inflammatory pseudotumour and analyze the cause of misdiagnosis. Methods: The CT features of 46 cases of inflammatory pseudotumours confirmed by operation and pathology were reviewed and analyzed.Results:40 of 46 cases were misdiagnosed as lung cancer (87%),and the remaining 6 ones misdiagnosed as tuberculoma or benign tumor (13%).Conclusion:CT is limited to some extent in making a correct diagnosis involving pneumonic pseudotumour,especially with the enlargement of the hilar and mediastinal lymphs node.Biopsy overemphasis on a certain CT feature or clinical symptom and paying little attention to comprehensive analysis are the main cause leading to misdiagnosis.