Table 1.

– Description of the RENAL Nephrometry Score^*

	1 point	2 points	3 points
Radius, maximal diameter, cm	≤4	>4 but <7	≥7
Exophytic properties	≥ 50%	<50%	Entirely endophytic
Nearness of the tumor to the collecting system or sinus, mm	≥7	>4 but <7	≤4
Anterior/posterior	No points given. Mass assigned a descriptor of A, P, or X
Location relative to the polar lines†	Entirely above the upper or below the lower polar line	Lesion crosses the polar line	>50% of the mass is across polar line or the mass crosses the axial renal midline or the mass is entirely between the polar lines

^*Adopted from Kutikov and Uzzo [12]. Web tool for point-of-service use can be found at www.nephrometry.com.

^†Suffix “h” assigned if the tumor touches the main renal artery or vein.