白血病晚期影响中枢神经系统者较常见,但以截瘫为首发症状表现者非常少见,本院收治1例报告如下。患者,男性,19岁。因双下肢无力1年入院。1年前劳动时自觉腰部扭伤,自感酸胀不适,按摩后病情加重,出现严重腰痛,双下肢无力,当地诊断为“脊髓蛛网膜炎”,给地塞米松等治疗,疼痛好转。停药后又加重,并感小便困难。发病9个月时,行脊髓MRI检查,示T5～9水平脊髓后侧异常信号,为硬膜外占位 Late leukemia affecting the central nervous system are more common, but paraplegia as the first symptom is very rare, admitted to our hospital one case reported as follows. Patient, male, 19 years old. Due to weakness of the lower extremities 1 year admission. A year ago when labor conscious waist sprain, self-acid soreness, aggravating after massage, severe back pain, both lower extremities weakness, the local diagnosis of “spinal arachnoiditis” to dexamethasone and other treatment, pain improved. After stopping and aggravating, and sense of difficulty in urinating. At 9 months of onset, a spinal cord MRI examination showed an abnormal signal at the posterior spinal cord at T5-9 level for epidural space