A 67-year-old man with a right adrenal mass which was heterogeneous on CT (A), had fluid-fluid levels on T2-weighted MR sequences (B), high attenuation on t1-weighted sequences consistent with hemorrhage (C), and demonstrated heterogeneous, predominantly peripheral enhancement (D). CT also demonstrated a posterior left rib lesion (arrow) (E), which showed uptake on MIBG compatible with a metastasis (F). The adrenal mass was confirmed as a pheochromocytoma on resection. CT, computed tomography; MIBG, metaiodobenzylguanidine.