原发性肾脏淋巴瘤的MRI特征

发布时间：2018-05-13 13:00

本文选题：淋巴瘤 + 肾肿瘤　；参考：《放射学实践》2016年03期

【摘要】：目的:探讨原发性肾脏淋巴瘤(PRL)的MRI特征。方法:回顾性分析9例经手术病理证实的PRL的MRI检查资料,均行MRI平扫及增强。结果:9例共16个病灶,位于左肾6例8个,右肾2例2个,1例双肾受累6个病灶。病灶呈结节状或类圆形4例,不规则或地图状4例,新月形1例。瘤体直径0.6~7.8cm。MRI表现:肾内结节/肿块型4例,肾周型2例,肾盂型2例,弥漫浸润型1例,其中7例肾脏保持正常形态,所有病灶均无包膜。均呈等或稍长T1、等或稍长T2信号,T1WI反相位信号均无减低,DWI高信号,6例信号均匀,3例信号不均匀,其内见小片坏死呈长T1长T2信号。增强皮质期病变均呈轻度强化,髓质期8例轻度持续强化,1例明显强化,分泌期均呈低信号。结论:PRL的MRI表现具有较典型的特征,MRI检查是诊断PRL的有效方法。
[Abstract]:Objective: to investigate the MRI features of primary renal lymphoma (PRL). Methods: the MRI findings of 9 cases of PRL proved by operation and pathology were retrospectively analyzed. Results there were 16 lesions in 9 cases, which were located in 6 cases of left kidney (8 cases) and 2 cases of right kidney (2 cases) and 1 case of bilateral kidney involvement (6 lesions). The lesions were nodular or round in 4 cases, irregular or map in 4 cases, and crescent in 1 case. 0.6~7.8cm.MRI findings of tumor diameter were as follows: intrarenal nodule / mass type in 4 cases, perirenal type in 2 cases, pelvis type in 2 cases and diffuse infiltrating type in 1 case. All of them showed isometric or slightly long T1WI signal intensity. The signal intensity was not decreased on T1WI. In 6 cases, the signal intensity was homogeneous on DWI in 6 cases, and the signal intensity was uneven in 3 cases. The small slice necrosis showed long T 1 and long T 2 signal intensity in all cases. Enhanced cortical lesions showed slight enhancement, medullary phase 8 cases showed slight and continuous enhancement in 1 case, and secretory phase showed low signal intensity. Conclusion the MRI features of PRL are more typical and effective in the diagnosis of PRL.
【作者单位】：漯河市中心医院(漯河医专第一附属医院)医学影像科;解放军总医院放射诊断科;
【分类号】：R737.11;R445.2

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