CHGA and pheochromocytoma: A carcinoma of the right adrenal gland was originally suspected because of the morphology of the neoplastic cells, presence of tubule-like structures, and lack of well-differentiated chromaffin cells on histopathology; however, positive immunolabeling for chromogranin A confirmed that the tumor arose from the adrenal medulla, consistent with a pheochromocytoma (2, 19).