Figure 3: F-18 fluorodeoxyglucose-positron emission tomography/computed tomography (FDG PET/CT) maximum intensity projection image (a) shows abnormal tracer accumulation in the head and neck region and the right lung (infective). Plain CT (b, d) and fused PET/CT (c, e) image reveals FDG-avid soft tissue thickening in the right retromandibular trigone region (b, c) with FDG-avid lytic destructive lesion (bone window) in the right hemimandible (d, e) extending into the submandibular region (f, g), with FDG-avid right level Ib cervical lymph node