NP (9) - WHO grade III malignant or anaplastic meningioma

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楼主发表于 2008-03-10 11:03|举报|关注(0)
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姓名：	×××	性别：	F	年龄：	50
标本名称：	Left frontal brain tumor
简要病史：	Headaches for 3 months
肉眼检查：

Figures 1-3 are taken from intraoperative smear, figures 4-5 are taken from frozen section, and figure 6-7 are taken from paraffin section. What is your diagnosis? Do you need any immunohistochemical stain(s) to help you?

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本帖最后由于 2008-03-23 11:29:00 编辑

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: 聞道有先後,術業有專攻

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1 楼发表于2008-03-23 11:28:00举报|引用
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This is a case of WHO grade III malignant or anaplastic meningioma based on high mitotic counts - average 30~40 per 10 high power fields. According to WHO 2007 diagnostic creteria, meningioma with mitotic counts greater than 20 per 10 high power fields qualifies as malignant or anplastic meningioma.

1: huzhihon..

: 聞道有先後,術業有專攻

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2 楼发表于2008-03-13 10:19:00举报|引用
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We saw 4 mitoses on one high-power field. Assuming this is not a rare field, and represents other areas very well, how many mitoses would we find per 10 high-power field? Is there a diagnostic criterion for WHO grade III malignant or anaplastic meningioma that is based purely on mitotic count?

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: 聞道有先後,術業有專攻

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3 楼发表于2008-03-12 09:18:00举报|引用
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Based on what diagnostic criterion was this neoplasm diagnosed as (1) meningioma and (2) WHO grade II meningioma?

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: 聞道有先後,術業有專攻

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