Sumra R S, Hölper G, Wanis A
J Neurol. 1978 May 18;218(2):145-8.
A case of right sided extradural neurinoma at the level of the foramen magnum is reported which presented as an intramedullary spinal cord syndrome. Ischemia of the anterior spinal artery or of the vertebral artery was considered to be an important pathogenic factor in the production of the neurological syndrome. The outer part of the spinothalamic tract, where sensory fibers carrying pain and thermal sensibility from the sacral segments are situated, escaped ischemia as that part is supplied by penetrating branches of the pial arterial plexus. The discrepancy between the level of neurological deficit (C5) and site of the tumor (C1-2) was due to distant ischemia. The lack of a history of root pain and the rapid recovery following removal of the tumor also favor a vascular origin for the neurological deficit.
报告了一例枕骨大孔水平右侧硬脊膜外神经鞘瘤，其表现为脊髓内综合征。脊髓前动脉或椎动脉缺血被认为是产生神经综合征的重要致病因素。脊髓丘脑束的外侧部分，即来自骶段的传导痛觉和温度觉的感觉纤维所在部位，因由软膜动脉丛的穿支供血而未发生缺血。神经功能缺损水平（C5）与肿瘤部位（C1 - 2）之间的差异是由于远处缺血所致。缺乏根性疼痛病史以及肿瘤切除后迅速恢复也支持神经功能缺损的血管源性。
