肺及气管炎性假瘤的CT和MRI诊断  

Pulmonary and tracheal inflammatory pseudotumor: CT and MRI diagnosis

作　　者：甘新莲[1] 王秋霞[1] 周涛[1] 

机构地区：[1]华中科技大学同济医学院附属同济医院放射科,湖北武汉430030

出　　处：《医学影像学杂志》2006年第7期694-696,共3页Journal of Medical Imaging

摘　　要：目的:探讨肺及气管炎性假瘤的CT和MRI表现及特征。方法:搜集我院经病理证实的肺炎性假瘤23例及气管炎性假瘤2例,对其CT和MRI表现进行回顾性分析。结果:肺炎性假瘤的CT和MRI表现具有以下特征:①肿块多位于肺的外围,贴近胸膜,伴邻近胸膜增厚粘连;②病灶可呈楔形或方形,一侧边缘平直;③病灶密度及信号不均,有小空洞及支气管气像;④MRI SE T1WI及T2WI像肿块可表现为较肌肉高信号或稍高信号;⑤肿块内结节状及斑块样钙化;⑥病灶边缘粗长毛刺。气管炎性假瘤CT主要征象为管壁弥漫性增厚,管腔变窄,病变与周围结构分界较清楚,无浸润表现。结论:全面分析CT和MRI征象,仔细观察病灶内部结构及周围改变,并紧密结合临床资料有助于提高本病诊断的准确性。Objective：To evaluate the features of pulmonary and tracheal inflammatory pseudotumor on CT and MRI. Methods：The CT and MRI findings of 23 cases of pulmonary and 2 cases of tracheal inflammatory pseudotumor pathologically proved were analyzed retrospectively in our hospital. Results：Tile main CT and MRI findings were as follows： ① The lesions were usually showed as peripheral pulmonary nodules which bases were extensively nestling closely to pleurae with localized pleural thickening;② The lesions usually presented as wedge or tetragonal shape with lateral margins perpendicular to pleura with a straight cut edge; ③ The densities and signals of the lesions were not even with small multiple cavities and airbronchograms;④ T1-weighted images （T1WI） and T2WI demonstrated heterogeneous lesions with signal intensity greater or slightly greater than that of skeletal muscle; ⑤ Nodular and patchy calcifications were usually seen in centers of the lesions;⑥ The edge of the lesions presented long and thick spiculation. The main CT signs of tracheal inflammatory pseutotumor were as follows： the wall of trachea showed diffusely thickened and the lumen was stenotic. The lesions had no infiltrative signs. Conclusion： To analyze the signs especially the internal structure and margin of the lesions on CT and MBI is very helpful for the correct diagnosis of pulmonary and tracheal inflammatory pseudotumor.

关 键 词：炎性假瘤 体层摄影 X线计算机 磁共振成像 

分 类 号：R563[医药卫生—呼吸系统] R814.42[医药卫生—内科学]