Figure 7.

Painful paravertebral metastasis treated with cryoablation. (A) Computed tomography (CT) scan shows a large paravertebral mass invading the pleura, the rib, and the adjacent foramen. (B, C) Four cryoprobes are inserted into the tumor to achieve optimal tumoral covering with the ice ball. For thermal protection of the spinal cord, thermosensors are inserted into the foramina and insulation of the spinal canal is achieved with epidural CO₂ dissection. Note the precise control of the ice ball margins and the gaseous gap with CT guidance. No further consolidation is required as the vertebral body is not involved.