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女,53岁,头昏一月,MRI右侧侧脑室内见占位性病变,大小4×3×3cm,边界清晰。
诊断:室管膜下瘤(WHO I级)
生长缓慢的良性肿瘤,附着于脑室壁,肿瘤性胶质细胞成簇分布,背景富于纤维性基质,可有微囊形成(A slowly growing, benign neoplasm, typically attached to a ventricular wall, composed of glial tumour cell clusters embedded in an abundant fibrillary matrix with frequent microcystic change,WHO 2007.)