Imaging Tool for Predicting Renal Clear Cell Carcinoma Fuhrman Grade: Comparing R.E.N.A.L. Nephrometry Score and CT Texture Analysis

Table 2

R.E.N.A.L. nephrometry score standard.

Index	Score
	1 pt	2 pts	3 pts
(cm)	≤4		≥7
	≥50%	<50%	Completely endogenous
(mm)	≥7		≤4
	(ventral)	(back side)	(unable to determine)
	The tumor is located completely above or below the kidney	Most tumors are in the superior or inferior pole of the kidney	More than 50% of tumors pass through the upper/lower polar line of the kidney or are completely between the renal upper/lower polar line