腮腺腺淋巴瘤的CT诊断

The CT diagnosis of parotid adenolymphomas

目的:探讨腮腺腺淋巴瘤的CT表现及其诊断价值。方法:回顾性分析16例手术病理证实的腮腺腺淋巴瘤的CT征象,16例患者均行CT平扫、增强扫描,其中女性2例(12.5%),男性14例(87.5%)。分析病变部位、数目、大小、形态、密度、边缘及强化程度。结果:16例腮腺腺淋巴瘤共有28个病灶,10例单发(62.5%),单侧多发2例(12.5%),双侧多发4例(25%),病灶中心位于腮腺浅叶后下部20个(71.4%)。全部病灶边界清楚,病灶内密度不均匀17(17/28)个,增强后CT值增加的平均值为(38.7±19.5)HU,19个(19/28)病灶内可见小血管进入、包绕或贴边现象。结论:腮腺腺淋巴瘤的CT表现有一定特征性,结合发病性别、年龄、发病部位及临床表现,对术前定性诊断有较大意义。

Objective：To discuss the characteristics of CT manifestations of parotid adenolymphomas.Methods：The CT images of 16 patients with parotid adenolymphomas confirmed pathologically were analyzed retrospectively.All patients underwent CT precontrast and postcontrast scanning.Among 16 cases,2（12.5%） patients were female and 14（87.5%） patients were male.The imaging characteristic analyses included the position,number,size,shape,density,margin and enhancement intensity of the tumor.Results：Among the 16 cases of parotid adenolymphomas,28 lesions were found.Multiple synchronous tumors were found in 2 patients in one side and 4 patients in bilateral parotid.20（71.4%） leisions were located in the posterior and inferior quadrant of parotid.The margins in all leisions were well-defined and 17（17/28） lesions were inhomogeneous in desity.The mean CT value of all leisions increased（38.7±19.5）HU after contrast administration.19（19/28） lesions showed small vessels penetrating through or surrounding the tumor.Conclusion：CT features of parotid adenolymphomas are relatively characteristic.Imaging manifestation combined with clinical materials including gender,age,location,and symptom can play a helpful role in the diagnosis of parotid adenolymphomas.