Table 1.

RENAL nephrometry score for describing renal tumor anatomy. Adapted from [11].

RENAL nephrometry scoring system
		Score
Radius (maximal diameter)	≤4 cm	1
	4–7 cm	2
	≥7 cm	3
Exophytic/endophytic	≥50% exophytic	1
	<50% exophytic	2
	completely endophytic	3
Nearness to collecting system/renal sinus	≥7 mm	1
	4–7 mm	2
	≤4 mm	3
Anterior/posterior location	No points given. a, p or x as descriptor for mass location
Location relative to the polar lines	Entirely below lower polar or above upper polar line	1
	Mass crosses polar line	2
	50% of mass is across polar line or mass is entirely between polar lines or mass crosses axial midline	3
Scores	Group
4–6	Low complexity
7–9	Moderate complexity
10–12	High complexity