Failure of Classical β-Blocker Carvedilol to Deactivate Brown Adipose Tissue in a Patient with Pheochromocytoma

AbstractA 37-year-old woman with pheochromocytoma underwent presurgical FDG PET/CT. Despite her usual antiadrenergic medication consisting in 25 mg of carvedilol, PET/CT demonstrated intense and widespread FDG uptake in brown adipose tissue (BAT). No BAT FDG uptake was detectable on a repeated exami