Dysphagia in a patient with ankylosing spondylitis: A case report

Figure 1 Patient's preoperative cervical spine lateral X-ray examination showing prominent osteophyte formation anteriorly on the left at the C3-4 level.

Figure 2 Simple thoracolumbar radiography showing a bamboo spine appearance.

Figure 3 Patient's preoperative three-dimensional computed tomography examinations of cervical spine. A: Sagittal plane; B: Coronal plane.

Figure 4 Patient's preoperative magnetic resonance imaging examinations of cervical spine. A: Sagittal plane; B: Coronal plane.

Figure 5 Pictures during the surgery. A and B: Giant anterior cervical osteophyte.

Figure 6 Patient's postoperative X-ray examinations. A: Lateral radiograph of cervical spine 1 d after operation; B: At 1 mo after operation, indicating the follow-up of patients in different time periods after surgery.