神经母细胞瘤为儿童期很常见的肿瘤之一,本文报告2例向椎管内扩展的神经母细胞瘤,未作椎板切除术,仅用放疗和化疗治愈。例一为一足月、顺产1月男婴,因发作性呕吐一周入院,胸片发现左侧后纵膈有一肿块从胸_1延伸到胸_5,并累及邻近肋骨。脊髓腔造影显示左侧椎旁 Neuroblastoma is one of the most common tumors in childhood. In this article, we report 2 cases of neuroblastoma expanding into the spinal canal without laminectomy. Only radiotherapy and chemotherapy are used to cure it. Example 1 is a full-term, one-month-birth-born male infant who was admitted to the hospital one week after paroxysmal vomiting. The chest radiograph revealed a lump in the left posterior mediastinum extending from thoracic tract 1 to thoracic _5 and involving the adjacent ribs. Spinal angiogram showing left paravertebral