NCAM1 and hereditary pheochromocytoma-paraganglioma: For instance, pheochromocytomas are specific for chromogranin A and CD56, while an adrenocortical origin would be suggested by positive for calretinin, MART-1, and inhibin A. Synaptophysin levels can be elevated in both pheochromocytomas and adrenal cortical tumors [14].