Table 1. Characteristics of the studies included.

First Author, Yearof Publication	Country	Study Design	Institutions, no.	Instrument for Diagnosis	Patients, no.	Age, years, Mean(Standard Deviation)/Median(Range)	Male, no.	Nephrometry RENAL Score, Mean(Standard Deviation)/Median(Range)	Clinical Tumor Size, Median (Range), cm
Petros2012 [16]	USA	R	4	Radiography	83	61 (12)	52	8.0 (4–11)	5.0(4.1–11)
Lecomte2013 [8]	France	P	6	US+ CT	54	62 (31–81)	35	7.0 (1.5)	4.5(4–7)*
Gupta2013 [15]	USA	R	1	Radiography	17/19¶	47 (26–76)	9	8.9 (1.3)	5.0(4.1–15)
Ficarra2012 [9]	USA+ Italy	R	4	MR or CT	49	60 (52–66)#	NA	10 (8–10)#, †	5.0(4.4–5.5)#
Patel2010 [17]	USA	P	1	MR or CT	15	59 (44–76)	9	NA	5.0(4.1–7.9)

P = prospectively collected data; R = retrospectively; US = ultrasonography; CT = computerized tomography; MR = magnetic resonance; NA = data not available;

^*pathological tumor size;

^#median (interquartile range);

^¶17 patients with 19 operations;

^†PAUDA score.