The authors present a case of multiple intracranial aneurysms associated with a pheochromocytoma. The aneurysms were successfully clipped, and a suprarenal tumor located on the left side was totally removed. To the authors' knowledge this is the fourth reported case of these combined entities in the literature. The authors speculate on the possible etiopathogenesis of the relationship between intracranial aneurysms and attacks of hypertension caused by the presence of neoplasms that discharge acute and irregular levels of catecholamines, especially pheochromocytomas. Perioperative management designed to avoid undesired complications in this rare association is also discussed.