Extra-adrenal pheochromocytoma with reversible renal artery stenosis.

A rare case of extra-adrenal pheochromocytoma occurring in the aorto-caval space and responsible for right artery stenosis, is described. The pheochromocytoma was excised and the blood flow in the renal artery restored. The heightened blood pressure, of dual origin, returned to normal after the operation. Three years after surgery the patient was normotensive and urinary catecholamines and Plasmatic Renin Activity (P.R.A.) were normal.