涎腺肌上皮瘤的CT表现  

CT Findings of Myoepithelioma of Salivary Glands

作　　者：余长亮[1] 宋文[1] 钱银锋[1] 余永强[1] 王万勤[1] 刘斌[1] 

机构地区：[1]安徽医科大学第一附属医院放射科,合肥230022

出　　处：《临床放射学杂志》2012年第4期497-500,共4页Journal of Clinical Radiology

摘　　要：目的分析涎腺肌上皮瘤(myoepithelioma,ME)的CT表现,以提高对该病的认识。资料与方法回顾性分析12例经病理证实的涎腺ME的CT表现并复习相关文献。所有病例均行CT平扫,其中9例行增强扫描。结果 12例肿瘤中发生于大涎腺9例(其中腮腺6例,颌下腺3例),小涎腺3例(鼻腔、硬腭、咽旁间隙各1例)。8例肿块边界清楚,4例肿块边界不清,其中1例发生于硬腭伴有骨质吸收破坏。平扫肿块多呈中等软组织密度,9例密度不均,3例密度均匀。增强扫描不均匀强化7例,肿块内可见结节样强化,囊变区不强化,均匀强化1例,1例位于硬腭病灶强化不明显。结论涎腺ME的CT表现具有一定特点,能为临床诊断和选择手术方式提供帮助。Objective To improve the recognition of salivary myoepithelioma by analyzing the CT findings of the disease.Materials and Methods CT findings of 12 patients with myoepithelioma proved by pathology were retrospectively analyzed,and the relevant literatures were reviewed.All patients received plain CT and 9 had received contrast enhacement CT as well.Results Of 12 salivary myoepithelioma,6 lesions located in parotid gland,3 in the submandibular gland,and 1 in the nasal cavity,hard palate and parapharyngeal space respectively.Eight lesions had well defined margin,4 tumors had indistinct margin,and one myoepithelioma arising from the hard palate eroded the bone of the hard palate.On plain CT,the lesions presented as intermediate density,heterogeneous（n=9） or homogeneous（n=3）.On contrast-enahced imaging,7 tumors had inhomogenous enhancement with enhancing nodules and nonenhancing areas of cystic configuration,1 tumor had homogenous enhancement,and 1 tumor located in the hard palate showed slight contrast enhancement.Conclusion There are certain characteristics of myoepithelioma in salivary glands on CT.CT is helpful in clinical diagnosis and treatment.

关 键 词：肌上皮瘤 涎腺 体层摄影术 X线计算机 

分 类 号：R739.8[医药卫生—肿瘤]