患者男,25岁。于2005年1月诊断为急性淋巴细胞白血病-L1型。首次联合化疗后达到完全缓解,经过3个周期的强化和巩固治疗后行自体外周血造血干细胞移植,移植后2月余,患者出现左上肢疼痛,未予特殊处理;1周后出现左上肢水肿、麻木,感觉、运动功能基本消失,垂腕,脑脊液检查正常,骨髓形态学检查提示完全缓解,外周血涂片 Male patient, 25 years old. In January 2005 was diagnosed as acute lymphoblastic leukemia-L1 type. After the first combination of chemotherapy to achieve complete remission, after 3 cycles of consolidation and consolidation of autologous peripheral blood stem cell transplantation, more than 2 months after transplantation, patients with left upper extremity pain, no special treatment; 1 week after the left upper limb edema , Numbness, feeling, motor function disappeared, vertical wrist, cerebrospinal fluid examination was normal, bone marrow morphology examination showed complete remission, peripheral blood smear