Table 1. Summary of clinical and pathological features and group differences between papillary renal cell carcinoma (pRCC) and clear cell renal cell carcinoma (ccRCC) (whole cohort, n = 7,543).

	pRCC		ccRCC		whole cohort
	n	%	n	%	n	%	p
Age at surgery							0.94
<65 years	1,096	56.4	3,166	56.5	4,262	56.5
≥65 years	847	43.6	2,434	43.5	3,281	43.5
All	1,943	100.0	5,600	100.0	7,543	100.0
Sex							<0.001
Female	474	24.4	2,243	40.0	2,717	36.0
Male	1,469	75.6	3,357	60.0	4,826	64.0
All	1,943	100.0	5,600	100.0	7,543	100.0
T classification							<0.001
pT1a	862	44.4	1,854	33.1	2,716	36.0
pT1b	433	22.3	1,347	24.1	1,780	23.6
pT2a	163	8.4	397	7.1	560	7.4
pT2b	82	4.2	134	2.4	216	2.9
pT3a	288	14.8	1,125	20.1	1,413	18.7
pT3b	75	3.9	604	10.8	679	9.0
pT3c	8	0.4	36	0.6	44	0.6
pT4	32	1.6	103	1.8	135	1.8
All	1,943	100.0	5,600	100.0	7,543	100.0
Grade							0.0021
G1	279	14.4	938	16.8	1,217	16.1
G2	1,248	64.2	3,324	59.4	4,572	60.6
G3	358	18.4	1,145	20.4	1,503	19.9
G4	58	3.0	193	3.4	251	3.3
All	1,943	100.0	5,600	100.0	7,543	100.0
Lymph node metastasis							<0.001
pN0/pNx	1,800	92.6	5,390	96.2	7,190	95.3
pN+	143	7.4	210	3.8	353	4.7
All	1,943	100.0	5,600	100.0	7,543	100.0
Distant metastasis							0.02
cM0	1,792	92.2	5,060	90.4	6,852	90.8
cM1	151	7.8	540	9.6	691	9.2
All	1,943	100.0	5,600	100.0	7,543	100.0