1. Disappearance of a Cervical Spine Chordoma After Nonoperative Treatment by Roman Radl, Andreas Leithner, Norbert Kastner, Koppany Bodo, Alexander Nader, and Reinhard Windhager J Bone Joint Surg Am Volume 87(8):1822-1827 August 1, 2005 ©2005 by The Journal of Bone and Joint Surgery, Inc.

2. T2-weighted sagittal magnetic resonance imaging scan showing hyperdense signal in a tumor at C2 with extension into the spinal canal producing cord compression. Roman Radl et al. J Bone Joint Surg Am 2005;87:1822-1827 ©2005 by The Journal of Bone and Joint Surgery, Inc.

3. Computed tomography scan demonstrating an osteolytic lesion at C2 with partial calcification in the lesion. Roman Radl et al. J Bone Joint Surg Am 2005;87:1822-1827 ©2005 by The Journal of Bone and Joint Surgery, Inc.

4. Histological section of a specimen from the open biopsy shows multivacuolated physaliphorous cells in a myxoid matrix. Roman Radl et al. J Bone Joint Surg Am 2005;87:1822-1827 ©2005 by The Journal of Bone and Joint Surgery, Inc.

5. The tumor cells show a positive immunohistochemical staining for cytokeratin (brown color) (original magnification, ×400). Roman Radl et al. J Bone Joint Surg Am 2005;87:1822-1827 ©2005 by The Journal of Bone and Joint Surgery, Inc.

6. T2-weighted magnetic resonance imaging scan showing a hyperdense signal in the soft tissue, representing the location of the postoperative abscess, but there is no evidence of the chordoma or spinal stenosis. Roman Radl et al. J Bone Joint Surg Am 2005;87:1822-1827 ©2005 by The Journal of Bone and Joint Surgery, Inc.

7. T2-weighted magnetic resonance imaging scan, made twenty-four months after histological verification of the chordoma at C2, showing the complete disappearance of the extraosseous tumor. Roman Radl et al. J Bone Joint Surg Am 2005;87:1822-1827 ©2005 by The Journal of Bone and Joint Surgery, Inc.