PET-CT with ¹⁸F-FDG in the diagnosis of Takayasu's arteritis and the assessment of response to therapy

We present a patient without specific symptoms of vasculitis, with normal acute phase reactants, but with the pathological diagnosis of Takayasu' arteritis that was referred for a PET-CT with (18)F-FDG. Scan findings showed inflammatory activity in the vessel walls of the aorta and after the appropriate treatment, a second scan with (18)F-FDG, correctly assessed the therapeutic response. We discuss the contributions of PET-CT with (18)F-FDG in the management of this pathological entity.