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中分化松果体实质肿瘤(PPTID)为中度恶性松果体间质肿瘤,各年龄段均可受累。组织病理学观察显示,由弥漫性片状或分叶状排列、大小较为一致的轻至中度核异形性细胞组成,核分裂活性呈中低水平;偶有肿瘤组织显示松果体细胞瘤和松果体母细胞瘤特征,当上述两种组织病理学特征并存时即可归入中分化松果体实质肿瘤分类中。中分化松果体实质肿瘤在世界
The moderately differentiated pineal parenchymal tumor (PPTID) is a moderate malignant mesenchymal tumor in all age groups. Histopathological observation showed that there were moderate to low levels of mitotic activity in mildly or moderately nuclear allogeneic cells, which were arranged in diffuse lamellar or lobulated form. The occasional tumor tissues showed that pineal cell tumors and pineal cell tumors Glioblastoma characteristics, when the two histopathological features coexist can be classified as moderately differentiated pineal parenchymal tumor classification. Differentiation of pineal parenchymal tumors in the world