A wide spectrum of benign and malignant diseases can present as an adrenal mass. Combined PET-CT is useful for evaluation of adrenocortical and adrenomedullary masses. 18F-FDG has been extensively used as PET radiotracer for this purpose. 18F-FDOPA PET, 68Ga-DOTA peptide (68Ga-DOTANOC/TATE) PET, and 11C-HED PET have also been used for imaging of adrenal medullary lesions, whereas 11C-MTO PET has been used for adrenocortical imaging. We provide a review of imaging characteristics of adrenal gland pathologies on PET-CT using different tracers.