Figure 1. (A) Cervical spine MRI revealed a loss of the normal curvature of the spine, with a continuous sequence. (B) There were no signs of narrowing in the intervertebral spaces, and no noticeable bulging or protrusion of the intervertebral discs. There was no obvious abnormality in the adjacent structure of the vertebral artery. (C) Three-dimensional reconstruction of cervical spine CT showed no evidence of excessive bone growth in the cervical vertebrae or their attachments, and there was no narrowing of the bilateral intervertebral foramina. Additionally, there was no stenosis in the bony spinal canal, and no definite abnormal density shadow was observed in the spinal canal. MRI – magnetic resonance imaging; CT – computed tomography.