Gallbladder Paraganglioma Associated with Mutation: a Potential Pitfall on F-FDOPA PET Imaging.

A 36-year-old male patient initially presented with hypertension, tinnitus, bilateral carotid masses, a right jugular foramen, and a periaortic arch mass with an elevated plasma dopamine level but an otherwise normal biochemical profile. On surveillance MRI 4 years after initial presentation, he was found to have a 2.2-cm T2 hyperintense lesion with arterial enhancement adjacent to the gallbladder, which demonstrated avidity on Ga-DOTATATE PET/CT and retrospectively on F-FDOPA PET/CT but was non-avid on F-FDG PET/CT.