影像所见
CT
- 左侧小脑半球囊性肿块伴后上方实性壁结节
- 无相应钙化
- 第四脑室受压及阻塞性脑积水伴室管膜下水肿
MRI
- 左侧小脑半球囊性肿块，其后上缘有强化壁结节毗邻左侧小脑幕叶
- 壁结节内磁敏感伪影，可能与内部血管有关
- 无相应扩散受限
- 周围实质轻微水肿
- 第四脑室受压及阻塞性脑积水伴室管膜下水肿
带注释的图像和插图
Cystic mass in the left cerebellar hemisphere with an avidly enhancing mural nodule (red arrow).
Axial FLAIR sequence demonstrates hyperintense signal within the solid component (red arrow) contrasted with serpiginous hypointense flow voids (yellow arrows). Minimal parenchymal edema is noted along the margins of the cystic component of the mass (blue arrow).
Relative facilitated diffusion (low DWI signal and high ADC signal, red arrows) is demonstrated in the solid portion of the mass relative to brain parenchyma.
诊断
血管母细胞瘤
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