20例肺炎性假瘤的影像诊断

目的：通过对20例肺炎性假瘤的影象表现的分析，总结误诊原因。方法：对20例经手术病理证实的肺炎性假瘤患者的X线胸片及CT进行回顾性分析。结果：假瘤多为单发，偶见多发，＜3cm病灶密度均匀，边缘清楚，3cm以上病灶边缘不规则，密度不均匀。可有分叶征及炎症浸润影，粗长毛刺，邻近胸膜增厚粘连，靠近肺门侧见引流支气管等。X线胸片误诊10例（50％），CT扫描7例，误诊4例（57％）。结论：肺炎性假瘤影像表现缺乏特异性，充分认识与炎症相关的征象，并重视呼吸道感染病史，提高诊断正确率，减少误诊是有可能的。

Imaging Diagnosis of 20 Cases of Inflammatory Pseudotumor of Lung

Objective:To analyze the radiologic display of inflammatory pseudotumor of lung for summarizing the causes of misdiagnosis.Methods:Twenty cases of pulmonary inflammatory pseudotumor confirmed by the postoperative pathology were analyzed retrospectively from X-ray examinations and CT imaging scanning.Results:The pseudotumor occurred in the most part in single, and occasionally multiple,<3cm in size,with homogeneous density,and distinct brink;if the focus>3cm,the brink was irregular,the density not homogeneous,and sign of lobulation and infiltrative shadow from inflammation,with gross,long spicule sign,and local thickening and adhesion of neighboring pleura.Drainage bronchi was seen near the hilus of lung.Ten cases(50%)were misdiagnozed from X-ray examination.Seven patients were examined by CT with a misdiagnosis of 4 cases(57%).Conclusion:The radiologic display of inflammatory pseudotumor of lung was lack of special featrures.As sofar haveing sufficient knowledge with the related signs of inflammation and emphasis given to the history of respiratory tract infection of patients, it was possible to increase the rate of correct diagnosis.