Primary adrenal gland malignancies include adrenocortical carcinoma (ACC) and pheochromocytoma. For initial staging and restaging or surveillance of known or suspected ACC, MRI of the abdomen and pelvis without and with contrast, CT of the abdomen and pelvis with contrast, CT of the chest with contrast, and fluorine-18-2-fluoro-2-deoxy-D-glucose (FDG)-PET/CT, or FDG-PET/MRI are recommended to assess for local extent and distant metastases or to evaluate for recurrence. For initial staging and re…