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F、低分化和胚胎性肿瘤1.成胶质细胞瘤(图43～52):一种间变性细胞丰富的肿瘤,可由梭形瘤细胞、小圆形低分化瘤细胞或多形性瘤细胞各别单独组成或多样化地混合组成.常见坏死、假栅栏结构,瘘状血管和血管内皮增殖、出血和浸润性生长.有些瘤细胞显示细长的胶质突起.一般典型的成胶质细胞瘤不显较分化瘤细胞的证据.但是其它多数成胶质细胞瘤中局部可辨为星形细胞瘤灶,少数局部可辨为少突胶质细胞瘤灶,个别的局部可辨为室管膜瘤灶.事实上任何这些胶质瘤都是成胶质细胞瘤分化的最终结果.这类肿瘤的变型如下:
F, poorly differentiated and embryonal tumors 1. glioblastoma (Figure 43 ~ 52): an anaplastic cell rich tumor, by the spindle tumor cells, small round poorly differentiated tumor cells or pleomorphic cells Each consisting of a mixture of individual components or diverse common necrosis, false fence structure, fistula and vascular endothelial proliferation, bleeding and invasive growth Some tumor cells show elongated glial processes Typical typical glial cells Tumor is not more evidence of differentiated tumor cells.But most of the other glioblastoma locally identifiable astrocytoma, a small number of local oligodendrocyte neoplasms can be identified, some of the local can be identified as the chamber tube In fact, any of these gliomas are the end result of glioblastoma differentiation.The variants of such tumors are as follows: