Table 4.

Enhancement patterns of HCC and ICC in different liver background

HCC (n=546)									ICC (n=273)
	No cirrhosis (n=127)				Cirrhosis (n=419)					No cirrhosis (n=221)				Cirrhosis (n=52)
	<2 cm	2–5 cm	>5 cm	Total	<2 cm	2–5 cm	>5 cm	Total	P	<2 cm	2–5 cm	>5 cm	Total	<2 cm	2–5 cm	>5 cm	Total	P
Arterial phase
Enhancement level									0.920									0.940
Hyperenhancement	5	25	93	123	27	132	243	402		2	48	138	188	1	13	32	46
				(96.8)				(95.9)					(85.1)				(88.5)
Isoenhancement	0	1	2	3	0	3	7	10		0	2	8	10	0	2	0	2
				(2.4)				(2.4)					(4.5)				(3.8)
Hypoenhancement	0	1	0	1	1	3	3	7		0	8	15	23	0	2	2	4
				(0.8)				(1.7)					(10.4)				(7.7)
Enhancement distribution										0.412									0.285
Homogeneous	5	24	24	53	24	97	79	200		2	11	5	17	0	5	2	7
				(41.7)				(47.7)					(7.7)				(13.5)
Heterogeneous	0	3	69	72	3	39	168	210		0	13	40	53	0	4	5	9
				(56.7)				(50.1)					(24.0)				(17.3)
Peripheral rim-like	0	0	2	2	1	2	6	9		0	34	116	151	1	8	27	36
				(1.6)				(2.1)					(68.3)				(69.2)
Portal phase									0.560									NA
Hyperenhancement	0	0	1	1	0	5	4	9		0	0	0	0 (0)	0	0	0	0 (0)
				(0.8)				(2.1)
Isoenhancement	3	3	13	19	5	33	35	73		0	0	0	0 (0)	0	0	0	0 (0)
				(15.0)				(17.4)
Hypoenhancement	2	24	81	107	23	100	214	337		2	58	161	221	1	17	34	52
				(84.2)				(80.5)					(100)				(100)
Delayed phase									0.077									NA
Hyperenhancement	0	0	0	0	0	2	1	3		0	0	0	0	0	0	0	0 (0)
				(0)				(0.7)					(0)
Isoenhancement	0	0	1	1	5	12	3	20		0	0	0	0	0	0	0	0 (0)
				(0.8)				(4.8)					(0)
Hypoenhancement	5	27	94	126	23	124	249	396		2	58	161	221	1	17	34	52
				(99.2)				(94.5)					(100)				(100)

Unless otherwise indicated, data are number of nodules, with percentages in parentheses.

p value showed the difference between cirrhosis and no cirrhosis group.