【摘要】 目的回顾性分析侧脑室表皮样囊肿的磁共振成像(MRI)表现,探讨磁共振(MR)扫描技术在侧脑室表皮样囊肿诊断中的价值。方法分析12例手术病理证实为侧脑室表皮样囊肿的MR影像表现及术前做MR常规平扫、增强扫描和T2FLAIR以及磁共振弥散加权成像(DWI)资料。结果 11例T1WI呈低信号,1例T1WI呈高信号,脂肪抑制像未能抑制。12例T2WI呈高信号,稍高于脑脊液。10例T2FLAIR囊内见不同数量的絮状稍高信号影,其中有2例仅在边缘出现少量絮状等高信号影。DWI均表现为明显高信号,信号不均匀。增强多无强化或或囊壁轻度强化,其中2例发生恶性变者局部囊壁呈结节状及花环状明显强化。结论侧脑室表皮样囊肿MR表现具有一定的特征性,对本病的诊断与鉴别诊断具有价值。侧脑室表皮样囊肿病灶检出方面,DWI均优于MRI平扫以及T2FLAIR,是首选扫描技术。更多还原

【Abstract】 Objective To analyze the MR imaging manifestations of lateral ventricular epidermoid cyst retrospectively,and evaluate the MR scanning technic in the diagnosis of lateral ventricular epidermoid cyst.Methods Twelve cases with histologically proved lateral ventricular epidermoid cyst were analyzed the MR imaging manifestations,and performed with MRI routine scan,T1WI enhancement,T2 FLAIR and DWI.Results Among these cases,11 cases were hypointensity on T1WI and fat-suppression T1WI were included in 1 case with hyperintensity in the mass.All of the cases were hyperintensity on T2WI,which 2 cases were a little higher than cerebrospinal fluid.On T2 FLAIR,10 cases were hyperintensity,while 2 cases appeared as hypointensity with patch iso-to hyper-intensity margin.All of them were hyperintensity on DWI,homogeneous or heterogeneous.All of them appeared no-enhancement or wild enhancement,except 2 case with malignant transformation showed as tuberculous and partial mark ring-enhancement.Conclusion MR is a valuable method for the diagnosis and differential diagnosis of lateral ventricular epidermoid cyst.DWI,which is better than MRI routine scan and T2 FLAIR in the detection of leisions and speciality of sign,is the first choice for canning.更多还原