This looks like an oligodendroglioma, the grade of which (WHO grade II or grade III) depends on the presence or absence of hypercellularity, cellular anaplasia, necrosis, vascular proliferation and mitotic activity. In the absence of anaplasia, necrosis and vascular proliferation, some pathologists rely on average mitotic count in "hot" areas. If this is >5/10 high-power fields, some would grade it as WHO grade III anaplastic oligodendroglioma. Otherwise, it is a WHO grade II oligodendroglioma.

 谢谢马老师的高诊！他说：这看上去象少枝胶质瘤，级数为ＷＨＯ２级或３级，主要取决于是否细胞丰富，细胞间变，血管增生和核分裂数．在没有间变的情况下，坏死和血管增生．一些学耆认为热点地区的平均核分裂数是一个依敕性指标．如果大于每十个高倍视野五个，一些人把它分级为ＷＨＯ３级间变性胶质瘤否则将是ＷＨＯ２级少枝胶质瘤．

 同意马老师的意见！

 胶质细胞瘤    3级

 胶质细胞瘤2-3级

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 胶质细胞瘤3级

 同意少突胶质细胞瘤

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