Functional imaging findings in a case of adrenal lymphoma and a case of metastatic pheochromocytoma. (A) Adrenal lymphoma with a mediastinal lymph node (arrows). (B) Sporadic pheochromocytoma with a metastatic mediastinal lymph node (arrows). This patient's tumors have rapidly metastasized to the lungs. Note the similar 18F-FDG PET/CT presentation in both cases. As expected, the PHEO was positive for 18F-FDOPA.