附睾腺瘤样瘤 MRI 表现

目的：探讨附睾腺瘤样瘤(AT)MRI 的影像表现及诊断价值。方法回顾性分析5例经组织病理证实的附睾 AT 患者的 MRI 表现,并复习国内外文献。结果4例附睾肿块 T1 WI 和 T2 WI 呈与睾丸类似的中等信号,增强扫描肿块呈中等强化,边缘呈稍高强化；1例合并继发性梗死及慢性肉芽肿炎,T1 WI 呈中等不均信号,T2 WI 呈略低信号,DWI 呈高信号,动态增强呈环形明显强化；5例均见少量鞘膜积液。结论AT 是附睾罕见良性肿瘤,MRI 表现有一定的特征性,有助于术前诊断。

MRI findings of adenomatoid tumor of epididymis

Objective To investigate the MRI manifestations and diagnostic value of adenomatoid tumor (AT)of epididymis. Methods The MRI features of 5 patients with AT of epididymis were analyzed retrospectively,which were confirmed by histopathology,and some relevant medical literatures were reviewed.Results The epididymal tumor was manifested as moderate signal on T1 WI and T2 WI,similar to adjacent testicule,and as moderate signal with slightly high rim-enhancement on enhanced T1 WI in 4 cases.Secondary infarction and chronic granulomatous inflammation in 1 patient was found and presented unevenly moderate signal on T1 WI,slight hypointensity on T2 WI, hyperintensity on DWI and rim-enhancement on dynamic enhancement MRI.Few hydrocele was detected in all 5 patients.Conclusion AT of epididymis is a rare benign neoplasm with some characteristic MRI features which is helpful for the preoperative diagnosis.