肺炎性假瘤的CT诊断

目的分析肺炎性假瘤的CT表现 ,以便与周围型肺癌和结核球等球形病灶鉴别。方法搜集 17例经手术病理证实的肺炎性假瘤的CT及临床资料进行回顾性分析。结果 (1)病灶多位于肺的边缘部胸膜下 ,多为圆形或类圆形 ,边缘光整的肿块 ,直径 2 - 4cm ,密度均匀 ;(2 )病灶基底可广泛贴于胸膜 ,局部胸膜粘连增厚 ,无胸水 ;(3)边缘可见粗短毛刺、棘状突起 ,或呈浅分叶状 ;(4 )可有纵隔淋巴结肿大 ,但无融合征象。结论全面分析肺炎性假瘤的CT特征 ,重视肺部感染病史 ,对本病的诊断和鉴别诊断是很有帮助的。

CT Diagnosis of Pulmonary Inflammatory Pseudotumor

Objective To analyze the CT features of pulmonary inflammatory pseudotumor so as to distinguish from spherical lesion of peripheral pulmonary carcinoma and tuberculoma.Methods We investigated retrospectively the data of 17 cases with pulmonary imflammatory pseudotumor, which were proved pathologically after surgey.Results The main CT findings were as follows:(1) The lesions were usually pulmonary circumference, most of them were circle or circle-like mass, margin was smoothly, density was even, diameter was 2-4cm. (2) The bases of the lesions were extensively nesting closely to pleural with localized pleural thickening and strip, but no pleural effusion. (3) The edge of lesion presented short and thick speculation, or shallow ovulated. (4) Pulmonary inflammatory pseudotumor might cause mediastinal lymphadenopathy. Conclusion It is very helpful to the diagnosis and differential diagnosis of pulmonary inflammatory pseudotumor by analyzing the CT features of pseuotumors all sidedly and emphasis on the history of the patient.