急性淋巴细胞白血病

世界卫生组织 (World Health Organization, WTO)造血和淋巴组织肿瘤分类（第 4 版）[38]Swerdlow SH, Campo E, Harris NL, et al. WHO classification of tumours of haematopoietic and lymphoid tissues: Volume 2. Revised 4th ed. Lyon, France: IARC; 2017.

要确诊急性淋巴细胞白血病，需要进行骨髓活检/抽吸。骨髓中存在 20% 或更多的淋巴母细胞时可确诊。