一例罕见的涉及四条染色体的８；２１变异易位付建军，曲垣瑞，郝洁患者女性，５８岁，因乏力，面色苍白两月余来我所就诊。查体：中度贫血貌，皮肤有散在出血点，胸骨轻度压痛，肝脾未触及。Ｈｂ８５ｇ／Ｌ，Ｒｅｔ０．００２，ＢＰＣ１９×１０￣９／Ｌ，ＷＢＣ１１．３... An example of a rare 8; 21 translocation involving four chromosomes Fu Jianjun, Qu Jirui, Hao Jie Female patient, 58 years old, due to fatigue, pale for more than two months I came to the clinic. Physical examination: moderate anemia appearance, scattered skin bleeding point, mild tenderness of the sternum, liver and spleen not touched. Hb85g / L, Ret0.002, BPC19 × 10 ~ 9 / L, WBC11.3