摘要
目的:分析肺类癌的CT及影像学特征。方法:经手术和病理证实的15例肺类癌患者行胸部平扫及增强扫描,扫描范围包括肺尖至肺底部,观察患者的病灶部位、分布、大小、形态、密度、内部钙化、与周围支气管的关系、增强前后CT值、阻塞后征象(肺气肿、肺不张、肺炎)及转移情况。结果:病理证实13例为典型肺类癌,2例为非典型肺类癌;CT诊断中央型9例,周围型6例,病灶平均直径4.8 cm,肿块边缘分叶,边界光滑清楚,4例显示内部钙化,支气管腔内结节2例,肿瘤同时侵犯支气管腔内外7例,"冰山征"4例,伴肺不张2例,阻塞性肺炎2例,阻塞性肺气肿2例;6例周围性病灶边缘毗邻支气管分支,CT增强扫描病灶呈轻中度强化。结论:肺类癌的影像学表现缺乏特征性,肺内肿块或结节、"冰山征"及毗邻支气管内部钙化等可辅助诊断肺类癌。
Objective： To investigate CT features of pulmonary carcinoids tumors. Methods： CT scans of 15 patients with primary pulmonary carcinoid tumor diagnosed by biopsy or surgical resection were reviewed retrospectively,observing the lesion location,distribution,size,shape,density,internal calcification,relationship with peripheral bronchi,CT value expression before and after enhancement,symptoms after blocking. Results： It was proved that 13 typical carcinoids and 2 atypical carcinoids. CT diagnosed 9 of the 15 lesions were central,and the remaining 6 lesions were peripheral.The mean tumor diameter was 4. 8 cm. These lesions had a lobulated contour and well-defined border.Calcification was seen in 4 cases. 2 cases manifested as a focal mass or nodule located entirely within the lumen of a bronchus. 7 cases showed intraluminal component and extra luminal component of the tumor. 4 cases showed the iceberg sign that the bulk of the mass was extra luminal with a smaller intraluminal component. Post obstructive atelectasis,pneumonia,or hyperlucency may also be seen. Six of the peripheral carcinoid tumors involved or located close to a subsegmental bronchus branch. On CT contrast scanning,the lesions had slight or intermediate enhancement. Conclusion： A lobulated and well-defined border nodules or masses locates near hilar or peripheral lung field that causes narrowing,deformation,or obstruction of a bronchus or show the iceberg sign,and that the presence of calcification,and nodules enhance with contrast administration should suggest the diagnosis of carcinoid tumors.
作者
吴杰
肖辉
刘江勇
吴忠纯
刘英
闫鹏
WU Jie XIAO Hui LIU Jiangyong WU Zhongchun LIU Ying YAN Peng(Department of Medical Imaging, Liupanshui People＇s Hospital, Shuicheng 553000, Guizhou, China Department of Radiology, Guizhou Provincial People~ Hospital, Guiyang 550000 Guizhou, China)
出处
《贵州医科大学学报》
CAS
2016年第10期1235-1237,1240,共4页
Journal of Guizhou Medical University
关键词
肺
肺类癌
体层摄影术
螺旋计算机
X线影像增强
lung
pulmonary carcinoid tumor
tomography
X-ray computed
CT enhancement
