case_images: PMC4458293_01
case_images: Lateral view of the cervical radiograph showing atlantoaxial subluxation in the flexion position.
case_images: CRIOR2015-861403.001.jpg
case_images: PMC4458293_01_CRIOR2015-861403.001.jpg
case_images: fig1
case_images: A radiograph of the cervical spine showed AAS (Figure 1).
case_images: Magnetic resonance image showing abscess around the odontoid process. (a) Sagittal T2-weighted image. (b) Sagittal T1-weighted image with gadolinium. (c) Coronal T1-weighted image with gadolinium.
case_images: CRIOR2015-861403.002.jpg
case_images: PMC4458293_01_CRIOR2015-861403.002.jpg
case_images: fig2
case_images: C1/C2 level (Figure 2). Computed tomography myelography showed osteolytic destruction of the left atlantoaxial joint.
case_images: Computed tomography images after myelography showing destruction of the atlantoaxial joint on the left side and compression of cervical spinal cord. (a) Axial view. (b) Coronal view.
case_images: CRIOR2015-861403.003.jpg
case_images: PMC4458293_01_CRIOR2015-861403.003.jpg
case_images: fig3
case_images: The AAS developed because of destruction of the atlantoaxial joint and subsequent compression of the right side of the cervical spinal cord (Figure 3).
case_images: Images six months after the treatment of intravenous antibiotics and a halo immobilization showing vertical subluxation on the odontoideum and disappearance of the abscess. (a) Lateral view. (b) Sagittal T2-weighted image.
case_images: CRIOR2015-861403.004.jpg
case_images: PMC4458293_01_CRIOR2015-861403.004.jpg
case_images: fig4
case_images: At the follow-up examination after 1 year, an MRI showed disappearance of the abscess around the odontoid process (Figure 4(a)). A radiograph of the cervical spine still showed asymptomatic slight vertical subluxation, although this had not progressed (Figure 4(b)).