A pheochromocytoma is a neuroectodermal tumor that originates from the chromaffin cells of the sympathetic system. It has typical symptoms or signs, such as periodic attacks of paroxysmal hypertension, palpitation, headache, and sweating, related to an increased catecholamine secretion. Types of catecholamine secreted from tumors are usually norepinephrine and epinerphrine. There are a few reports of dopamine-secreting pheochromocytoma with absence of other catecholamines secretion. Here, we report the case of a 59-year-old man with dopamine-secreting pheochromocytoma, with no typical symptoms or signs.