Thoracic chordoma with unusual radiographic features

Area of Science:

• Oncology
• Radiology
• Neurosurgery

Background:

• Chordomas are rare malignant bone tumors arising from notochordal remnants.
• They most commonly occur in the sacrococcygeal region and the skull base.
• Thoracic spine involvement is infrequent, making such cases noteworthy for understanding disease patterns.

Observation:

• A case of chordoma involving the T12 thoracic vertebral body is presented.
• Plain film radiography showed lytic destruction and partial collapse.
• Noncontrast CT and Metrizamide myelography identified vertebral destruction with paravertebral and intraspinal soft tissue masses.

Findings:

• The chordoma presented as a photon-deficient or
• cold
• area on nuclear medicine bone scan.
• This finding is unusual, as chordomas typically show increased uptake on bone scans.
• Spinal angiography revealed normal vascularity associated with the lesion.

Implications:

• This case expands the understanding of chordoma imaging characteristics.
• The "cold" defect on bone scan represents an atypical presentation that may influence diagnostic considerations.
• Further research into the pathophysiology of atypical bone scan findings in chordoma is warranted.