SYP and adrenal cortex adenoma: The immunohistochemistry stain of the tumor (inhibitin +, Melan-A +, synaptophysin +, vimentin + and AE1/AE3+) supported an adrenocortical origin rather than a renal or mesenchymal origin, which was in accordance with preview reports.[13,14] Therefore, a pre-operative biopsy of the tumor, if possible, should be performed to confirm the diagnosis of ectopic adrenocortical adenoma and provide evidence for clinical treatment.