Relapsing polychondritis is a rare disease, and the cases characterized only by fever and restricted airway involvement are extremely rare.
A 44-year-old febrile man without any other symptoms and signs was admitted to Rui’jin Hospital for further investigation, where 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) showed an 18FDG accumulation and …