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Figure 1: (a) T2-weighted image showing the craniovertebral anomaly. No bony neural compression at the craniovertebral junction is seen. (b) T2-weighted coronal MRI image showing the twist of the cervicomedullary cord. (c) CT scan showing the deformed craniovertebral junction with abnormal bone formation at the anterior arch of atlas. (d) Axial view of the CT scan showing marked atlantoaxial rotation. (e) Coronal CT scan showing the rotation of the anterior skull base in relationship with the bones of the craniovertebral junction. (f) Posterior view of the 3D model of the craniovertebral junction showing the deformed bones of the craniovertebral junction. (g) Anterior view of the 3-D model showing the rotation of the craniovertebral junction in relationship with the anterior skull base. (h) Picture of the patient with head rotation. The chin is touching the medial side of the clavicle

Figure 1: (a) T2-weighted image showing the craniovertebral anomaly. No bony neural compression at the craniovertebral junction is seen. (b) T2-weighted coronal MRI image showing the twist of the cervicomedullary cord. (c) CT scan showing the deformed craniovertebral junction with abnormal bone formation at the anterior arch of atlas. (d) Axial view of the CT scan showing marked atlantoaxial rotation. (e) Coronal CT scan showing the rotation of the anterior skull base in relationship with the bones of the craniovertebral junction. (f) Posterior view of the 3D model of the craniovertebral junction showing the deformed bones of the craniovertebral junction. (g) Anterior view of the 3-D model showing the rotation of the craniovertebral junction in relationship with the anterior skull base. (h) Picture of the patient with head rotation. The chin is touching the medial side of the clavicle