Figure 21 (above): Technitium-99 MDP bone scan shows the entire maxilla and mandible with severe osteonecrosis.  Base of skull and cervical vertebral involvement is also seen.  Patient had been treated for trigeminal neuralgia of the second and third branches.

Figure 22 (below): Same patient as Figure 21.  Anterior view shows all four quadrants of the jaws to be affected, although the right mandible is much less involved than other sites.