儿童支气管粘液表皮样癌的CT表现

摘要

Objective To explore the CT findings of mucoepidermoid carcinoma of the tracheobronchial tree in children pa-tients and to improve the radiographic knowledge and diagnostic accuracy. Methods CT findings and clinical features of 11 his-topathologically proved mucoepidermoid carcinomas in 11 consecutive children were reviewed retrospectively. Results The clini-cal symptoms included cough,sputum,fever,wheezing,chest pain and hemoptysis. The patient was proved to be low-grade(n=11) mucoepidermoid carcinoma histopathologically. 2 cases located in bronchus,2 cases in main bronchus,6 in lober bronchus, and one in segmental bronchus. The tumor presented as no-invasive endotracheobronchial well-defined round-like nodule(n=5, 2 locating in lobar bronchus,1 locating in main bronchus,2 locating in bronchus),or intra-and-extraluminal well-defined round-like nodule or mass(n=5,locating in main and lobar and lower bronchus),or intra-and-extraluminal irregular mass and colum-nar sharp (n=1,locating in lobar bronchus). The density of lesion was similar to the muscle and the calcification within lesion was shown in 6 patient on non-enhanced CT. All the tumors had marked enhancement on enhanced CT. 9 cases showed bronchial artery supply. Obstructive changes were found in 10 cases. Conclusion Mucoepidermoid carcinoma of the tracheobronchial tree, usually located in lobar bronchus,appears at CT as well-defined lobulated airway mass,marked enhancement and calcification on CT. The bronchial arteries can be displayed in the most cases.%目的 探讨儿童支气管粘液表皮样癌的CT表现,以提高对其影像认识及诊断准确性.方法 回顾性分析经病理证实的11例支气管粘液表皮样癌的CT影像、临床和病理资料.结果 11例中主要临床表现有咳嗽、咳痰、发热、胸闷、气促、胸痛和咯血.11例均为低级别分型.肿瘤发生于气管2例,主支气管2例,叶支气管6例,段支气管1例.直径约1~3cm.肿瘤呈无腔外浸润的宽基底类圆形结节5例,腔内外类圆形肿块状5例,腔内外条柱状1例.11例均进行了CT平扫及CT增强扫描,平扫肿瘤均接近或等于肌肉组织密度,6例肿瘤内有钙化;11例增强扫描肿瘤均呈明显强化,其中9例显示支气管动脉供血.11例中10例存在气管阻塞性肺改变.结论 儿童支气管粘液表皮样癌多为低度恶性,好发于叶支气管,CT上多表现为边界清晰的气管腔内软组织密度占位,部分肿瘤可有钙化,强化明显,大部分可显示支气管动脉供血.