Myelodysplasia, clinically known as spinal cord cavernous disease, is a chronic progressive disease in which a cavity forms in the center of the spinal cord due to a variety of causes, compressing the conduction tracts of the spinal cord and resulting in corresponding symptoms. Spinal cord cavernous disease is a chronic progressive disease in which the central canal of the spinal cord enlarges or forms a tubular cavity under the influence of the causative agent and compresses the conduction tracts of the spinal cord. The etiology is unclear and may be related to subcerebellar tonsillar herniation malformations, skull base entrapment, flattened skull base, and lesions of the spinal cord. Spinal Cord Cavernous Disease is often manifested by abnormalities in some body sensations, such as decreased or even disappeared pain and temperature sensations; muscle weakness or even paralysis of the limbs and other symptoms. The examination is mainly CT, MRI and other imaging tests. Surgery is usually required for spinal cord cavernous disease.