Department of Radiology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, People's Republic of China.
Department of Radiology, Guilin People's Hospital, Guilin, Guangxi, 541000, People's Republic of China.
BMC Med Imaging. 2022 Nov 17;22(1):197. doi: 10.1186/s12880-022-00917-z.
To analyze the computed tomography (CT) and magnetic resonance imaging (MRI) features of patients with intra-parenchymal and intra-ventricular schwannoma.
The CT and MRI features of seven cases with intra-parenchymal and intra-ventricular schwannoma were analyzed retrospectively.
There were four men and three women (median age, 25 years; range, 12-42 years) in this study. The median tumor size was 4.4 cm (range, 3.1-6.5 cm). The mass was, respectively, round in four cases (57.1%), lobulated in two cases (28.6%) and oval in one case (14.3%). All tumors were well-circumscribed. Septa in the mass could be observed in three cases (42.9%), and nodular calcification was observed in two cases (28.6%), which peritumoral edema (n = 3, 42.9%) and hydrocephalus (n = 3, 42.9%) could be observed. Most of these lesions (n = 6) presented iso-hypointensity on T1-weighted images and iso-hyperintensity on T2-weighted images, except one lesion showing low intensity on T2WI. In addition, a fluid-fluid level was observed in one case. After contrast agents' injection, all masses illustrated heterogeneously moderate to marked enhancement.
A well-defined solid and cystic mass with calcification and moderate to marked delayed enhancement may be an objective account of intra-parenchymal or intra-ventricular schwannoma.
分析脑实质内和脑室内 schwannoma 的计算机断层扫描（CT）和磁共振成像（MRI）特征。
回顾性分析 7 例脑实质内和脑室内 schwannoma 的 CT 和 MRI 特征。
本研究包括 4 例男性和 3 例女性（中位年龄 25 岁；范围 12-42 岁）。肿瘤大小中位数为 4.4cm（范围 3.1-6.5cm）。肿块分别为圆形 4 例（57.1%），分叶状 2 例（28.6%）和椭圆形 1 例（14.3%）。所有肿瘤均边界清楚。3 例（42.9%）可见肿块内分隔，2 例（28.6%）可见结节状钙化，3 例（42.9%）可见瘤周水肿，3 例（42.9%）可见脑积水。这些病变中的大多数（n = 6）在 T1 加权图像上呈等低信号，在 T2 加权图像上呈等高信号，除了 1 个病变在 T2WI 上呈低信号。此外，1 例可见液-液平面。造影剂注射后，所有肿块均呈不均匀中度至明显强化。
具有钙化和中度至明显延迟强化的边界清楚的实性和囊性肿块可能是脑实质内或脑室内 schwannoma 的客观表现。
