Figure 5. Panoramic dental CT scan in a 52-year-old man with a small periapical lesion (straight white arrows) from endodontal disease that surrounds a zone of condensing osteitis (arrowheads). Note that the radiopaque post (black arrows) from a root canal procedure fills the root canal. Compare this with the normal radiolucent root canal in the adjacent tooth (curved white arrow). (Reprinted, with permission, from reference 8.)