人类T—嗜淋巴病毒Ⅰ型(Human T—lymphotropic Virus type Ⅰ,HTLV—Ⅰ)是转录病毒的一种类型,是急性T淋巴细胞性白血病的一种病因。作者近来见到HTLV—Ⅰ引起的脊髓病,认为这种脊髓病与临床其他脊髓病不同,临床特点为:成年人两性均可患病,明显的锥体束征及轻度的感觉障碍和膀胱机能障碍,呈缓慢进展的病程。脊髓造影、脊髓CT、核磁共振影象都属正常。由于病人血清和脑脊液中发现了抗HTLV—Ⅰ抗体并在脑脊液中发现成人T白血病样细胞(adult T—Call leukemia—like Human T-lymphotropic Virus Type I (HTLV-I) is a type of transcriptional virus that is a cause of acute T-cell leukemia. The authors recently saw the myelopathy caused by HTLV-I, which is different from other myelopathy in clinical practice. The clinical features are: adults can have both sexes, obvious pyramidal tract signs and mild sensory disturbances and bladder Dysfunction, a slow course of progression. Myelography, spinal cord CT, MRI images are normal. Since anti-HTLV-I antibodies were found in serum and cerebrospinal fluid of patients and adult T-Call leukemia-like cells were found in cerebrospinal fluid