pheochromocytoma

A usually benign tumor of the adrenal medulla or the sympathetic nervous system in which the affected cells secrete increased amounts of epinephrine or norepinephrine.

A neuroendocrine tumour of the medulla of the adrenal glands

a vascular tumor of the adrenal gland; hypersecretion of epinephrine results in intermittent or sustained hypertension