Bladder paraganglioma mimicking a tumor contained in a ureterocele

Extra-adrenal pheochromocytoma is called paraganglioma. Paraganglioma near the ureterovesical junction can be confused with urothelial carcinoma in a ureterocele. Urinary metanephrine can be an indicator for bladder paraganglioma. Metaiodobenzylguanidine scintigraphy (MIBG) is an excellent method not only for distinguishing bladder paraganglioma from other submucosal mesenchymal tumors but also for detecting multifocal lesions. In the present case, we did not perform a preoperative MIBG scan because the patient was asymptomatic and urinary metanephrine was negative.
Source: Urology - Category: Urology & Nephrology Authors: Source Type: research