以下是引用mjma在2010-7-29 8:51:00的发言:
This is a case of WHO grade I meningioma of the microcystic type. Though focal tumor necrosis is seen, no other atypical features are sen. Careful mitotic counts have to be done, but from these photos I do not worry about worry about atypical or malignant meningioma. This is not a case of clear cell meningioma, which is very rare and often found in younger adults. Nuclei of neoplastic cells in clear cell meningiomas are centrally located, not eccentric like in this case. The vacuolated cytoplasm in clear cell meningiomas is glycogen-rich (PAS-positive), but not that of microcystic meningioma. |
这是一例WHOⅠ级微囊型脑膜瘤。虽然可见肿瘤局灶坏死,但是没有看到其他非典型的特征。必须仔细寻找核分裂像,但是从这张图片我不担心脑膜瘤的非典型性或恶性。这例不是透明细胞脑膜瘤,透明细胞脑膜瘤非常罕见而且常见于小孩。在透明细胞脑膜瘤中肿瘤细胞的核一般位于中心,而不是像这例中的核偏位。在透明细胞脑膜瘤中胞浆空泡状是因为富含糖原(PAS阳性),而不是像微囊型脑膜瘤这样。