Pheochromocytoma is a rare neuroendocrine tumour, developed at the expense of the chromaffin cells of the adrenal glands, which secretes in excess the catecholamines responsible for the major hemodynamic changes with cardiovascular complications [1]. The curative treatment of pheochromocytoma is based on surgery but requires preoperative preparation and conditioning of the blood pressure and specific postoperative monitoring [2].We report the case of a patient operated on for an enormous left adrenal pheochromocytoma, who had benefited from a left adrenalectomy whose immediate postoperative consequences were marked by the occurrence of severe left heart failure.