A Case of Pheochromocytoma Presenting as Syncope Due to Orthostatic Hypotension

Patients with pheochromocytoma manifest with headache, perspiration, and palpitation. Although most patients have either sustained or paroxysmal hypertension, some patients present with hypotension. However, severe orthostatic hypotension is relatively rare in patients with pheochromocytoma. We report here on a 72-year-old woman with pheochromocytoma and she presented with recurrent syncope due to hypotension and blood pressure fluctuation. Syncope due to hypotension is unusual in patients with pheochromocytoma and only a few such cases have been reported. The present case serves to illustrate an unexpected presentation of this tumor.