Yes. The tumor is a pheochromocytoma - they are quite rare but not THAT rare... and they are almost always, always benign. They can cause spurts of extremely high blood pressure..There is now an easy blood test to first rule in or out the possibility of the tumor (the little tumor can trigger spurts of adrenaline which shoot BP up). Some doctors are not aware that it is now in the medical literature that you must NOT TAKE any PPIs ( drugs for reflux or heartburn or GERD ) for several weeks before the blood test or you will get a false positive for the tumor.