腮腺腺淋巴瘤的CT、MRI表现

CT and MRI Findings of Adenolymphoma in Parotid Gland

目的探讨腮腺腺淋巴瘤(Warthin瘤)的CT、MRI影像学表现。方法回顾性分析经手术及活检病理证实的12例腮腺Warthin氏瘤的CT、MRI的影像学表现。结果12例腮腺Warthin瘤均为单侧发病,男性10例,女性2例,50岁以上8例(66.7%)。单发9例,多发3例,共16个病灶,其中9个(56.3%)病灶位于腮腺后下方。病灶呈圆形、椭圆形及分叶状软组织肿块,边缘光整,密度均匀或不均匀,囊变区呈类圆形液性密度灶;MRIT1WI病灶呈低信号,脂肪抑制T2WI呈高信号,囊变区呈更长T1、长T2信号,大多表现为早期轻中度强化。结论根据腮腺Warthin瘤的发病年龄、性别、部位及影像学表现,有助于该病诊断和鉴别诊断。

Objective：To discuss the CT and MRI findings of Warthin＇s tumor in parotid gland. Methods： 12 patients had pathology proven Warthin＇s tumor in the parotid gland,CT and MRI findings were retrospectively analysed. Results：Of the 12 cases,there were male （n= 10） ,female （n：2） ,8 patients （66.7%） were over 50 years of age. Altogether there were 16 lesions,with solitary （n： 9）,multiple （n= 3）. All lesions were located unilaterally, with the mass located in the lowerposterior part of the gland （n= 9,56.3 %）. On CT and MRI, lesions were round, oval or lobulated in shape, well-defined, homogeneous or heterogeneous soft tissue mass. Cystic area showed round shape and liquid density. On MRI, lesions were hypointense on T1WI, while hyterintense on T2 WI with fat suppress sequences, cystic area showed long T1 ,T2 signal intensities. After contrast administration,most of the lesion showed early mild or moderate enhancement on CT or MRI. Conclu- sion：Clinical materials including age,gender,location and imaging manifestations of lesion plays a helpful role in the diagnosis and differential diagnosis of Warthin＇s tumor.