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Updated: Dec 20, 2025

An Orthotopic Bladder Tumor Model and the Evaluation of Intravesical saRNA Treatment
Published on: July 28, 2012
Bladder Paraganglioma Mimicking a Tumor Contained in a Ureterocele
Young Hyo Choi1, Dong Sup Lee1
1Department of Urology, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Republic of Korea.
Abstract:
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 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 metaiodobenzylguanidine scan because the patient was asymptomatic and urinary metanephrine was negative. Partial cystectomy with ureteroneocystostomy was performed for curative treatment because the tumor was very close to the ureteral orifice.
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