We have presented a case with pheochromocytoma and thyrotoxicosis. She was admitted on the grounds of weight loss, palpitation, sweating and headache. She described numerous attacks of flushing and palpitation. On physical examination her thyroid gland was diffusely enlarged and she had a mild tremor, Laboratory investigations were in accordance with both pheochromocytoma and Graves' disease. Abdominal ultrasonography and computerized tomography scan revealed a mass located in the right adrenal gland. Metaiodobenzylguanidine scintiscan confirmed the diagnosis. The patient had preoperative medical therapy for both Graves' disease and pheochromocytoma. After surgical removal of the tumor and right adrenal gland, the patient was euthyroid without any medical therapy during the follow-up period, in this case we wanted to point out the possible role of catecholamines in the physiopathology of hyperthyroidism and-Graves' disease.
Keywords: Pheochromocytoma, Hyperthyroidism, Graves' disease