Outcome in Patients with Fever of Unknown Origin whose (18)Fluoro-Deoxyglucose Positron Emission Tomography/Computerized Tomography Finding is Non-Diagnostic

Abstract

Prognosis has not been known for patients with fever of unknown origin (FUO) whose (18)fluoro-deoxyglucose (F-18-FDG) positron emission tomography/computerized tomography (PET/CT) finding is non-diagnostic. A total of eight patients with FUO that underwent F-18-FDG PET/CT were retrospectively identified January 2016-June 2017 in a tertiary hospital in Korea. Of these, two patients were diagnosed with microscopic polyangitis and Kikuchi's disease and one patient was transferred to another hospital. Of five patients whose diagnoses were not confirmed, four patients received non-steroidal anti-inflammatory drug and/or low dose steroid and symptoms disappeared. Our study suggests that outcome of patients with FUO whose F-18-FDG PET/CT finding is non-diagnostic would be favorable.