Pheochromocytoma of the urinary bladder: update on new diagnostic modalities plus case report. 
Extra-adrenal pheochromocytoma (PCC) is a rare entity.  Its occurrence in the urinary bladder has only been reported less than 200 times.  Here we present two case reports of a bladder PCC with an update on the diagnostic techniques, treatment modalities and follow-up of patients with this disease.