腮腺间隙原发病变的CT和MRI影像诊断及鉴别诊断  

CT and MRI imaging diagnosis and differential diagnosis of parotid space primary disease

作　　者：谢超 徐坚民 龚静山 李莹 吴明祥 朱进 

机构地区：[1]暨南大学第二附属医院深圳市人民医院放射科,广东深圳518020

出　　处：《医学影像学杂志》2011年第2期182-185,共4页Journal of Medical Imaging

基　　金：深圳市重点医学专科项目(编号:297182)

摘　　要：目的:提高腮腺间隙原发病变影像诊断及鉴别诊断能力。方法:回顾性分析32例腮腺间隙原发病变的影像特征,包括25例良性肿瘤及肿瘤样病变,7例原发恶性肿瘤。结果:CT和MRI能显示病变累及的范围。多形性腺瘤局部含有丰富的纤维粘液样基质,在T2WI上呈高信号以及增强后明显强化。腮腺腺淋巴瘤多位于腮腺浅叶下极,表现为边界清楚的双侧或单侧多发的囊实性肿瘤,增强扫描早期明显强化。基底细胞瘤呈T1WI、T2WI低信号,增强后呈早期及延迟强化。1例血管淋巴管瘤和1例淋巴管瘤表现边界较清的弥漫性软组织肿块,具有"钻缝生长"特征。神经鞘瘤在MRI上信号不均匀,可见斑片状T2高信号,增强后不均匀明显强化。恶性肿瘤边界不清,浸润生长,T2WI呈低信号,增强后不均匀强化。其它病变缺乏影像学特征。结论:腮腺间隙原发病变有一定的临床及影像特征,术前CT和/或MRI检查,有利于病变的诊断、鉴别诊断和治疗方法的选择。Objective：To further improve the recognition of image manifestation of primary diseases in the parotid space.Methods：32 cases of primary diseases in parotid space primary diseases were selected and their CT and/or MRI findings were analyzed in details,including 25 cases of benign tumor and tumor-like disease,7 cases of malignant tumor.Results：CT and MRI could show the extent of the lesions.Pleomorphic adenoma had affluent fibromyxoid stroma,hyperintensity asymmetrically after enhancement.Adenolymphoma located in inferior superficial lobe of parotid gland mostly,displayed as cystic and solid tumor bilaterally or unilaterally,clear boundary,and early enhancement.Basal cell adenoma manifested hypointensity in T1WI and T2WI,early and delayed enhancement.1 case angiolymphangioma and 1 case lymphangioma manifested diffuse soft tissue mass,clear boundary and had characteristic of seam drilling growth.Schwannoma had patching hyperintensity and significant enhancement.Malignant tumor manifested hypointensity in T2WI,obscure boundary,infiltrating and heterogeneous enhancement.Other diaeases were short of imaging characteristic.Conclusion：Parotid space diseases have some characteristic features in clinical and imaging,CT and MRI examinations are helpful for diagnosis,differentiating diagnosis and planning of therapy before surgery.

关 键 词：腮腺间隙病变 磁共振成像 体层摄影术 X线计算机 

分 类 号：R739.87[医药卫生—肿瘤] R814.42[医药卫生—临床医学]