Aggressive epithelial odontogenic ghost cell tumor in the mandible: CT andMR imaging findings

We report a case of aggressive epithelial odontogenic ghost cell tumor aris ing from the mandible in a 32-year-old man. On CT and MR studies, the tumor was seen as a large, heterogeneous soft-tissue mass that caused marked des truction of the mandible and invaded the mouth floor and tongue base. The t umor displayed a variety of densities and signal intensities on CT and MR i mages, which correlated well with the degree of cellularity of epithelial i slands, abundance of ghost cells and eosinophilic materials, calcification, and cystic areas on histologic sections. Owing to the unpredictable biolog ical behavior of this type of tumor, careful, long-term followup is highly recommended.