脾脏硬化性血管瘤样结节性转化的MRI表现

发布时间：2018-03-04 20:30

本文选题：脾脏　切入点：血管瘤　出处：《临床放射学杂志》2015年04期 　论文类型：期刊论文

【摘要】：目的探讨脾脏硬化性血管瘤样结节性转化(SANT)的MRI特征。方法回顾性分析10例经手术病理证实的脾脏SANT患者的MRI资料,总结其影像特征。10例均行MR平扫及多期增强扫描,其中7例行扩散加权成像(DWI)及双回波同反相位磁共振成像(IP/OP)。结果 (1)单发9例,均为类圆形肿块,4例(44.4%)见假包膜;T1WI呈等或低信号;T2WI呈不均匀低信号8例(88.9%),不均匀稍高信号1例(11.1%);动态增强扫描均为向心性、渐进性强化,其中辐条轮状强化7例(77.8%),明显结节样强化2例(22.2%),延迟期呈等或高信号,内均见裂隙;7例DWI检查中,低信号6例(85.7%),等信号1例(14.3%);病灶内出血2例(22.2%),均未见坏死囊变。(2)多发1例,表现为脾内弥漫分布的类圆形小结节(10个),T1WI均为等信号,T2WI为高信号,增强扫描渐进性强化。结论单发脾SANT的MRI表现有一定的特征性,特别是病灶周围假包膜有助于本病的诊断;多发SANT与脾脏其他脉管性肿瘤鉴别困难。
[Abstract]:Objective to investigate the MRI features of sclerosing hemangioma like nodular transformation of spleen (sant). Methods the MRI data of 10 cases of splenic SANT confirmed by operation and pathology were analyzed retrospectively, and the imaging features of 10 cases were summarized. In 7 cases, DWI (diffusion weighted imaging) and IPP / OPV (double echo in inverse phase magnetic resonance imaging) were performed in 7 cases. All of them were round masses (n = 4, 44.4%).) pseudocapsule T1WI showed isobaric or hypointensity on T _ 2WI in 8 cases (88. 9%), inhomogeneous hyperintensity in 1 case (11. 1%), dynamic contrast enhancement was concentric and progressive enhancement. Among them, 7 cases with heliform enhancement of spokes, 22.2 cases with obvious nodular enhancement, with equal or high signal intensity in delayed phase, 6 cases with low signal intensity (85.775%), 1 case with equal signal intensity (14.3%), 2 cases with intracerebral hemorrhage (22.22%, none with necrotic cysts. 2 cases) with multiple lesions. The small round nodules with diffuse distribution in the spleen (all of the 10 lesions on T1WI were hyperintense and enhanced with progressive enhancement on T _ 2WI). Conclusion the MRI features of single splenic SANT are characteristic, especially the pseudocapsule around the lesion is helpful for the diagnosis of the disease. Multiple SANT is difficult to differentiate from other vascular tumors of spleen.
【作者单位】：浙江大学医学院附属第二医院放射科;浙江省余姚市中医医院放射科;浙江大学医学院附属第一医院放射科;
【分类号】：R733.2;R445.2

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