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患者女,58岁。头晕1个月余,加重伴头痛20余天。神经系统检查阴性。影像检查:MR平扫示左侧侧脑室不规则形异常信号,沿脉络丛走行方向分布,病变主体以实性成分为主,呈均匀等T1、等T2信号,DWI信号无增高,最大横截面位于侧脑室三角区,大小约3.9 cm×3.1 cm,实性部分周边呈花瓣样分布多个囊变区,部分囊内液体FLAIR像信号轻度增高(图1~3)。病变占位效应显著,周围白质内见明显水肿带。增强扫描病灶实性部分明显均匀强化,囊变部分无强化,所示范围软脑膜无强化(图4、5)。术前MRI诊断:左侧侧脑室脑膜
Female patient, 58 years old. Dizziness more than 1 month, aggravated with headache for more than 20 days. Negative neurological examination. Image examination: MR plain scan showed abnormal left ventricle irregular signal along the choroid plexus distribution direction, the main body of the main component of the solid composition was uniform T1, T2 signal, DWI signal without increasing the maximum cross-section Located in the triangular region of the lateral ventricle, the size of about 3.9 cm × 3.1 cm, the solid part of the surrounding petal-like distribution of multiple cystic areas, part of the intracapsular fluid FLAIR signal slightly elevated (Figure 1-3). Significant lesions occupying effect, see obvious edema zone around the white matter. Enhancement of the solidified part of the lesion was markedly and uniformly enhanced, with no enhancement of the cystic part, with no enhancement of the pia mater in the range shown (Figure 4,5). Preoperative MRI diagnosis: left lateral ventricular meninges