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Basilar artery aneurysm simulating pheochromocytoma

Medical and Research Services (Drs. Emanuele, Dorsch, and Lawrence), Veterans Administration Hospital, Hines, and the Departments of Surgery (Dr. Scarff), Medicine (Drs. Emanuele and Lawrence), and Biochemistry (Dr. Lawrence), Loyola University of Chicago Stritch School of Medicine, Maywood, IL.

Address correspondence and reprint requests to Dr. Lawrence, Veterans Administration Hospital, Building 1, Room C-344, Hines, IL 60141.

Stimulation of sympathetic vasomotor centers by lesions in the posterior fossa has been described in humans and animals. We describe a patient with a pheochromocytoma-like syndrome and a basilar artery aneurysm. Repair of the aneurysm was followed by disappearance of hypertensive episodes. Posterior fossa lesions must be considered in patients with hypertensive crises when diagnostic procedures do not indicate an adrenal or extra-adrenal pheochromocytoma.