Pathology slides of the resected specimen with different stains. A: Hematoxylin and eosin stained section of the adrenal mass demonstrating adipose tissues infiltrated by tumor cells (×100). B: Immunohistochemical detection of synaptophysin in the tumor cells (×100). C: Immunohistochemical detection of chromogranin A in the tumor cells (×100). D: Immunohistochemical detection of VIP-positive cells (×200).