FDG-PET and PET/CT images. (A) FDG-PET coronal image of the mass. There is an abnormal accumulation of FDG in the left mandibular region (arrow). (B) PET/CT fusion image showing abnormal strong FDG accumulation corresponding to the mass on the left mandible (arrow). CT, computed tomography; FDG, 18 F-fluorodeoxyglucose; PET, positron emission tomography.