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四、急性淋巴细胞白血病(ALL) [分型与诊断要点] (一) 形态学分类(FAB、1976) 1.L1型 以直径<12(10～15)μm的小细胞同质性增殖为主,核大而规则,核染色质均一,核仁不明显,胞浆少、轻或中度嗜碱性,本型为儿童中常见类型。 2.L2型 以直径>12μm大的细胞增殖为主,核形不规则,核染色质多变而不均一,核仁1或多个,常较大。胞浆量丰富,着色不定,有些细胞深
Four, acute lymphoblastic leukemia (ALL) [points and diagnostic points] (a) morphological classification (FAB, 1976) 1.L1 type to small cell homogeneity of <12 (10 ~ 15) , Nuclear large and regular, uniform nuclear chromatin, nucleoli are not obvious, less cytoplasm, mild or moderate basophilic, this type is common in children. 2.L2 type with a diameter of> 12μm large cell proliferation, irregular nuclear, nuclear chromatin heterogeneous and heterogeneous, one or more nucleolus, often larger. Cytoplasm is rich, indefinite color, some cells deep