Differential diagnosis

Lucency of C7 and sclerosis of T3 are most consistent with an aggressive process such as neoplasia. A multicentric or metastatic myeloma, or other metastatic neoplasia (carcinoma, hemangiosarcoma, lymphoma) could also be considered. The degenerative intervertebral disc disease may be incidental.

Diagnosis

Multiple myeloma.

Discussion

An MRI was performed, and contrast enhancing tissue was found in multiple cervical and thoracic vertebrae as well as in the spinal canal and venous sinuses.

Necropsy examination found myeloma at these sites as well as invasion of the venous sinuses.