Abstract
Large vessel vasculitis often manifests as a diverse set of symptoms, making it challenging to diagnose. Diagnostic criteria focus on physical examination and imaging findings. However, for elderly patients with arteriosclerosis, it may be difficult to distinguish vascular thickening from arteriosclerotic burden, further complicating diagnosis. 18F-fluorodeoxyglucose positron emission tomography-computed tomography (PET/CT) examination is a potentially important modality for the diagnosis of large vessel vasculitis. We report on the utility of PET/CT for diagnosis of large vessel vasculitis for three patients with fever and markedly elevated inflammatory markers of unknown cause who were hospitalized at our department.