an estimated 62,700 new cases and 14,240 deaths expected in 2016. 1 Due in part to
increasing utilization of cross-sectional imaging, the incidence of small renal masses (SRMs;
defined as maximum tumor diameter less than 4 cm) is increasing. 2 SRMs represent a
range of histologic entities from benign to malignant; approximately 15% to 20% are benign
and 20% to 25% are considered to be potentially biologically aggressive. Most, however …