原发睾丸淋巴瘤MRI表现  

MRI features of primary testicular lymphoma

作　　者：张在鹏[1] 梅列军[1] 龚晓明 邓明 鲁植艳[1] ZHANG Zaipeng;MEI Liejun;GONG Xiaoming;DENG Ming;LU Zhiyan(Department of Radiology^Zhongnan Hospital of Wuhan University,Wuhan 430071,China)

机构地区：[1]武汉大学中南医院医学影像科,湖北武汉430071

出　　处：《实用放射学杂志》2020年第2期247-250,共4页Journal of Practical Radiology

基　　金：中南医院培育基金项目(znpy2018033);北京市医院管理局重点医学专业发展计划项目(ZYLX201511);湖北省卫生健康委员会基金项目(Wj2017M044).

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.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(w=6),contrast enhanced scan(n=4)including DCE(=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.

关 键 词：原发睾丸淋巴瘤 磁共振成像 

分 类 号：R737.21[医药卫生—肿瘤] R445.2[医药卫生—临床医学]