How is macroscopy of pheochromocytoma?

Pheochromocytomas range in size from small, circumscribe lesions confined to the adrenal to large, hemorrhagic masses weighing several kilograms (100g to 4 Kg). On cut surface, smaller pheochromocytomas are yellow-tan, well-defined lesions that compress the adjacent adrenal Larger lesions tend to be hemorrhagic, necrotic, and cystic and typically efface the adrenal gland. Incubation of the fresh tissue with potassium dichromate solutions turns the tumor dark brown