腮腺良性肿瘤的磁共振成像特点  

MRI characteristics of benign parotid tumors

作　　者：马锦琳[1] 乔鹏岗[1] 李明[1] 李功杰[1] 

机构地区：[1]解放军第307医院放射科,北京100071

出　　处：《中国医学装备》2016年第3期70-73,共4页China Medical Equipment

摘　　要：目的:探讨腮腺良性肿瘤的磁共振成像(MRI)表现及其诊断价值。方法:回顾性分析22例经手术或穿刺病理证实的腮腺良性肿瘤患者的MRI资料,并与手术病理结果进行对比分析。结果:22例腮腺良性肿瘤均与正常腮腺组织分界清;11例多形性腺瘤中9例位于腮腺浅叶,2例位于腮腺深叶,在T_1WI上呈等或低信号,T_2WI上呈高信号,增强后明显强化,其中7例呈渐进性强化;8例腺淋巴瘤均位于腮腺浅叶,在T_1WI上高信号,T_2WI上呈等或低信号,增强后轻度不均匀强化;2例基底细胞腺瘤,1例位于腮腺深叶,1例位于腮腺浅叶,T_1WI上呈等信号,T_2WI上呈高信号,增强后明显强化;1例浆细胞型肌上皮瘤,无特征性表现。结论:腮腺良性肿瘤MRI表现有一定特征性,故MRI在腮腺良性肿瘤的诊断和鉴别诊断中有较高的临床应用价值。Objective： To evaluate the performance and diagnosis value of MRI to benign parotid tumors. Methods： The MRI characteristics of 22 patients with surgery and pathology proved parotid tumors were reviewed retrospectively, and contrasted with the surgery and pathology findings. Results： Twenty two cases of benign parotid tumors showed clear interface with the normal parotid tissue. The location of the 11 pleomorphic adenomas were superficial lobe（n=9） and deep lobe（n=2）, showing iso-/hypo-intensity on T1 WI, hyper-intensity on T2 WI, markedly enhancement after contrast administration, of which 7 cases showed progressive enhancement. The location of the 8 Warthin tumors were superficial lobe, showing hyper-intensity on T1 WI, iso-/hypo-intensity on T2 WI, slight enhancement after contrast administration. The location of the 2 basal cell adenoma were superficial lobe（n=1） and deep lobe（n=1）, showing iso-intensity on T1 WI, hyper-intensity on T2 WI, markedly enhancement after contrast administration. 1 case of plasma cell myoepithelioma have no characteristic manifestations. Conclusion： There were certain MRI characteristics in different common benign parotid tumors, MRI showed important clinical values in the diagnosis and differential diagnosis.

关 键 词：腮腺 良性肿瘤 磁共振成像 诊断 

分 类 号：R445.2[医药卫生—影像医学与核医学]