慢性中性粒细胞白血病 (CNL)是少见的慢性白血病 ,伴染色体三位体异常者极为罕见。我院于1 999年 8月收治 1例 CNL伴染色体三位体异常患者现报告如下。患者 ,男 ,45岁。因发热伴左足踝肿痛 ,在门诊行抗感染治疗 ,虽肿痛症状消失 ,但白细胞持续增高。体检 :智力正常 ,肝脾肿大 , Chronic neutrophil leukemia (CNL) is a rare chronic leukemia with rare chromosomal triad abnormalities. In our hospital in August 1999, one case of CNL with chromosome abnormalities was reported as follows. Patient, male, 45 years old. Due to fever and swollen left foot tinea, the anti-infective treatment in the clinic, although the symptoms of swelling disappeared, but the white blood cells continued to increase. Physical examination: normal intelligence, hepatosplenomegaly,