. Author manuscript; available in PMC: 2015 Mar 18.

Published in final edited form as: Clin Genitourin Cancer. 2013 Oct 19;12(1):55–62. doi: 10.1016/j.clgc.2013.07.006

Table 3.

Association between MRI and pathological features and disease progression

	MRI Feature		Progression n=68		P-value from Fisher’s exact test
	MRI Feature		Yes	No	P-value from Fisher’s exact test
R1	Necrosis	Yes	16	11	<0.0001^*
R1	Necrosis	No	0	41	<0.0001^*
R2	Necrosis	Yes	16	11	<0.0001^*
R2	Necrosis	No	0	41	<0.0001^*
R1	Microscopic fat	Yes	7	27	0.78
R1	Microscopic fat	No	9	25	0.78
R2	Microscopic fat	Yes	11	28	0.39
R2	Microscopic fat	No	5	24	0.39
R1	Retroperitoneal Collaterals	Yes	15	12	<0.0001^*
R1	Retroperitoneal Collaterals	No	1	40	<0.0001^*
R2	Retroperitoneal Collaterals	Yes	14	13	<0.0001^*
R2	Retroperitoneal Collaterals	No	2	39	<0.0001^*
R1	Renal vein thrombosis	Yes	8	1	<0.0001^*
R1	Renal vein thrombosis	No	8	51	<0.0001^*
R2	Renal vein thrombosis	Yes	6	0	<0.0001^*
R2	Renal vein thrombosis	No	10	52	<0.0001^*

	Progression		P-value from nonparametric median test
	Yes	No	P-value from nonparametric median test
Pathological Feature
Clear cell percentage	21.3	74.3	<0.0001^*
Alveolar percentage	36.8	45.6	0.57
Tubular percentage	5.1	30.8	0.02^*
Fuhrman Grade			<0.0001^*
1	0	7
2	4	32
3	5	7
4	5	4
Stage			<0.0001^*
1	2	41
2	2	7
3	1	0
4	12	0

statistically significant at type-I error of 0.05