摘要
目的探讨鼻咽腺样囊性癌(ACC)的MRI表现,评价MRI观察肿瘤侵犯范围的价值。方法回顾性分析17例病理确诊的鼻咽ACC患者的MRI表现。结果 17例鼻咽ACC均为黏膜下生长,表现为肿块型(n=6)及黏膜下增厚型(n=11),均侵犯周围组织,多有黏膜侵犯(n=12)。T2WI信号多不均匀(n=10),6例见分隔样改变,增强扫描可见明显强化。10例有脑神经侵犯,且均侵犯三叉神经;7例有颅内侵犯;12例有颅底骨质侵犯,且大部分为(n=11)多部位侵犯。2例淋巴结转移,1例出现肺转移。结论鼻咽ACC的MRI表现具有一定特征性。MRI可明确显示肿瘤局部侵犯范围及沿神经浸润扩散。
Objective To observe the MRI features of nasopharyngeal adenoid cystic carcinoma（ACC）,and to assess the value of MRI in evaluating the infiltrative extent of nasopharyngeal ACC.Methods MRI findings of 17 patients with pathologically confirmed nasopharyngeal ACC were analyzed retrospectively.Results MRI showed submucosal mass（n=6） or submucosal thickening（n=11） of the nasopharynx involving the para-pharyngeal space,and most of them（n=12） involved mucosa.Most lesions had hetergeneous signal intensity on T2WI（n=10）,and septations were seen in 6 patients.All the lesions homogeneously or inhomogeneously enhanced after contrast injection.Nasopharyngeal ACC involved trigeminal nerve in 10 patients.While 7 had intracranial invasions and 12 showed skull base invasions with multiple involvements（n=11）.Cervical lymphadenopathy was found in 2 patients and lung metastasis in 1.Conclusion Nasopharyngeal ACC has some characteristics on MRI.MRI can display the extension of local tumor and nerve involvements clearly.
出处
《中国医学影像技术》
CSCD
北大核心
2011年第5期921-925,共5页
Chinese Journal of Medical Imaging Technology
关键词
鼻咽肿瘤
癌
腺样囊性
磁共振成像
Nasopharyngeal neoplasms
Carcinoma
adenoid cystic
Magnetic resonance imaging
