From the case:
Parosteal osteosarcoma
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Case Discussion
Radiographs demonstrate a large paravertebral parosteal osteosarcoma of the spine.
These images are from Dr. John Hunter's amazing MSK collection. Dr. John Hunter is a professor in the department of radiology (musculoskeletal section) at UC Davis School of Medicine.
This case was donated to Radiopaedia.org by Radswiki.net