Pheochromocytoma is a rare cause of hypertension and catecholamine-releasing tumor that is suggested by the finding of paroxysmal hypertension accompanied by such symptoms as palpitation, headache and sweating. The early diagnosis of pheochromocytoma is very important, not only because it offers the possibility of curing hypertension but also because unrecognized pheochromocytoma is a potentially lethal condition. Moreover, 10% of the tumor are malignant.
This paper presents two cases of pheochromocytoma which were easily diagnosed by ultrasonography and completely curable by surgical treatment and a brief review of the pertinent literatures.
