Ultrasound, CT, and MR imaging Findings of Paraganglioma Originating at the Urinary Bladder: A Case Report

Approximately 10% of paragangliomas, which originate mainly in the adrenal gland, involve extraadrenal sites. Primary involvement of the urinary bladder is very rare. We report a case of paraganglioma originating in the urinary bladder, and describe the US, CT, and MR imaging findings.