A case of a 19-year-old male with a paraganglioma (pheochromocytoma) a
rising in the prostate and involving the urinary bladder is presented.
The radiological studies, including computed tomography, demonstrated
ringlike calcification of the tumor, a rare finding that is highly su
ggestive of the diagnosis of pheochromocytoma. The tumor was excised a
nd found to be malignant at surgery.