What is pheochromocytoma?

Rare neoplasms composed of chromaffin cells, which, like their non-neoplastic counterparts, synthesize and release catecholamines. These tumors are of special importance because although uncommon, they (like aldosterone-secreting adenomas) give rise to a surgically correctable form of HT. 0.2 à 0.3 % Of patient with HT have phéochromocytoma