腮腺腺淋巴瘤的影像学诊断与病理分析

目的探讨腮腺腺淋巴瘤的影像学表现，并与病理相对照。方法回顾性分析经手术或活检病理证实的腮腺腺淋巴瘤41例，其中男39例，女2例，年龄30～75岁，平均60．2岁。41例患者中25例行CT检查；16例行MR检查。影像学重点观察病灶的数目、部位、大小、形态、边缘、密度、信号、强化特征、强化方式等。结果41个患者，共发现60个病灶；单侧单发51例（75．6％），单侧多发和双侧多发共10例（244％）；其中位于腮腺浅叶41个病灶（68．3％）。病灶最大径0.6cm～4．6cm，平均2．5cm。60个病灶中，圆形／卵圆形45个（75％）；边界清晰者58个（96.7％）。25例行CT检查共发现35个病灶，增强扫描，病灶不均匀强化者25个，其中多以大于2.5cm的病灶为多。16例行MR检查共发现25个病灶，其中，T1WI多表现为等、稍高信号，T2WI全部信号为混杂信号，增强后病灶呈轻中度强化者20个，明显强化5个。相应的病理所见：肿瘤多呈圆形、卵圆形或扁圆形，包膜完整，可见多个不规则的囊腔，内含浆液或黏液样物质。光镜：肿瘤由上皮成分和淋巴样组织构成。结论年龄大于50岁的男性患者腮腺后下方出现单发或多发病灶，边界清楚，内部密度或信号不均匀，CT或MRI有中度以上的强化者，通常提示腺淋巴瘤的诊断。

Imaging Features and Pathology Analysis of Parotid Adenolymphoma

Objective To analyze the imaging features of the parotid adenolymphomas,and compare with the corresponding pathological findings. Methods A total of 41 cases with parotid adenolymphomas confirmed by pathology and immunohistochemistry were retrospectively reviewed. There were 39 men and 2 women,the age ranged from 30-75 years,withmean 60.2 years. Twenty-five patients under-went plain and contrast-enhanced CT scans,and 16 underwent MRI examinations. The following imaging features were analyzed:number,position...