A majority of the clinical use of positron emission tomography (PET)-computed tomography (CT) is related to cancer management. Its application in evaluating inflammatory diseases and pyrexia of unknown origin is becoming popular. We reviewed the fluorine-18-fluorodeoxyglucose PET-CT findings of an 80-year-old woman with nonspecific clinical presentation consisting of generalised malaise, moderately high fever and weight loss. Prior CT and magnetic resonance imaging were not helpful in providing a clinical diagnosis. The diagnosis was Horton's arteritis, and the patient responded well to high-dose steroids.
Aged, 80 and over ; Arteritis ; diagnosis ; Diagnostic Imaging ; methods ; Female ; Fluorodeoxyglucose F18 ; Humans ; Image Processing, Computer-Assisted ; Inflammation ; Positron-Emission Tomography ; instrumentation ; methods ; Steroids ; therapeutic use ; Tomography, X-Ray Computed ; methods ; Treatment Outcome