(UroToday.com) At the Society of Urologic Oncology (SUO) Annual Virtual Meeting, Dr. Brian Shuch reviewed strategies for identifying renal masses as oncocytoma, a type of benign renal mass. Although not as common as renal cell carcinoma (RCC), oncocytomas are not uncommon and account for 3-5% of renal masses and approximately 25% of small renal masses.