倾向间变型室管膜瘤（WHOIII级），免疫组化标记。

胶质母细胞瘤

倾向间变性室管膜瘤

I think this is a case of ependymoma of unclear grade (II or III). There are areas of necrosis, but this alone doesn't qualify an ependymoma as WHO grade III anaplastic. Other features need to be carefully looked for, including vascular/endothelial proliferation and mitotic counts. 

倾向间变性室管膜瘤

间变性室管膜瘤 WHO IV级，有栅栏状坏死了，血管周边的空晕区这是特征性标志

胶质母细胞瘤，小细胞型。

胶质母细胞瘤

 倾向室管膜瘤，WHO2级。从提供的图片上观察：血管增生、核分裂象等不明显，建议免疫组化ki67。