The authors report cases of pheocromocytomas operated in the period 1991-1997. 16 of these patients presented a monolateral pheocromocytoma, 1 a bilateral. A patient had a malignant evolution, one patient presented an extrasurrenal para-aortic localization. All the patients were operated by a middle longitudinal laparotomy. There was no mortality, neither significant morbility. In all the patients, who presented pre-operatory arterial hypertension, there was a regression of the symptomatology.