Vascular malformation of type Ⅰ spinal cord

Spinal dura mater arteriovenous malformations are more common in men, with a male to female ratio of 4 to 8: 1. The age of onset of this disease is about 45 years on average. Lesions occur in the thoracolumbar region. No obvious familial tendency. Statistics show that patients of this type are often associated with acquired disease, which may be related to traumatic factors, but the exact mechanism is still unclear.