Prognosis has not been known for
patients with
fever of unknown origin (FUO) whose ¹⁸fluoro-
deoxyglucose (¹⁸F-FDG)
positron emission tomography /computerized
tomography (
PET /CT) finding is non-diagnostic. A total of eight
patients with FUO that underwent ¹⁸F-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 ¹⁸F-FDG
PET /CT finding is non-diagnostic would be favorable.