【摘要】 目的 探讨原发睾丸淋巴瘤（PTL）的MRI表现特征及诊断价值。方法 回顾性分析经手术病理及免疫组化证实的6例PTL的MRI表现及相关临床资料，并与同期6例睾丸精原细胞瘤临床资料比较。采用高场1.5～3.0T MR仪行下腹-盆腔-睾丸的常规平扫（6例）、增强4例（其中动态增强或灌注3例）及扩散成像3例，观察病变大小、形态、信号强度及均匀度、强化特征以及DWI扩散特征和附睾及精索、淋巴结受累转移情况，分析其特征。结果 6例PTL平均发病年龄65岁（44～88岁）,病变呈类圆形或卵圆形、信号较均匀，T₁WI等信号（6/6）,T₂WI低信号（5/6）,1例欠均匀；T₂WI,病变-睾丸组织-睾丸鞘膜积液呈阶梯分层信号；增强后渐进性中度强化，持续时间长，增强曲线呈平台型（3/4）,平扫及增强病变区均可见小血管穿行，类似正常睾丸组织；DWI病变呈高信号，ADC值减低（n=3）。结论 PTL在MRI表现为T₁WI等信号结节或肿块并渐进性中度强化，T₂WI均匀低信号以及DWI呈明显扩散受限，后2项可视为特征性改变。更多还原

【Abstract】 Objective To explore the MRI features and diagnosis value of primary testicular lymphoma（PTL）. Methods The MRI features and clinical information of 6 patients with PTL were analyzed retrospectively and compared with clinical information of 6 patients diagnosed with testicular seminoma.The characteristic of lesion was analyzed with plain scan sequences（n=6）,contrast enhanced scan（n=4） including DCE（n=3） performed with 1.5-3.0T MR.DWI were performed in 3 cases.Results The average incidence age was 65 years old, the shape of lesion was round or oval.The lesion showed T₁WI iso-intense and T₂WI low signal intensity（1 with inhomogeneous signal intensity）.On T₂WI,there was stratified stepsize signal in lesion site, testicular tissue and hydrocele of testis.On DWI,the lesion showed hyper-intensity and lower ADC value（n=3）.Conclusion The MRI findings frompatients with PTL showed T₁WI iso-signal nodules with gradually moderate enhancement, with T₂WI low signal intensity and obvious DWI diffusal restriction.The latter two findings are specific for PTL.更多还原