TAFRO Syndrome

A 54-year-old male patient was admitted with a 3-day history of fever. Physical examination revealed bilateral edema in the lower extremities. Laboratory studies did not reveal any abnormalities, including serum immunoglobulins and monoclonal protein. Computed tomography showed mild splenomegaly and 18F-FDG-PET/CT revealed pleural effusion and systemic mild lymphadenopathy.