Table 2. The association between MCC and clinicopathologic characteristics.

Variable	n	MCCinvasive		P	MCCadjacent		P
		≤4	>4		≤8	>8
Age(year)				0.093			0.389
≤59	80	46	34		35	45
>59	75	33	42		38	37
Gender				0.153			0.484
Male	91	42	49		45	46
Female	64	37	27		28	36
Location of primary tumor				0.536			0.663
Left	92	45	47		42	50
Right	63	34	29		31	32
Pathologic classification				0.436			a0.029
Papillary + tubular	132	69	63		67	65
Other	23	10	13		6	17
Grade				0.847			0.726
G1	15	7	8		8	7
G2	109	56	53		53	56
G3	25	12	13		10	15
G4	6	4	2		2	4
Depth of penetration				0.396			0.054
T1	6	3	3		1	5
T2	32	20	12		21	11
T3	92	46	46		41	51
T4	25	10	15		10	15
Lymph node involvement				0.352			0.089
N0	76	35	41		42	34
N1	62	36	26		26	36
N2	17	8	9		5	12
Distant metastases				0.970			a0.008
M0	114	58	56		61	53
M1	41	21	20		12	29
Hepatic metastases				0.997			a0.027
No	100	51	49		54	46
Metachronous	14	7	7		7	7
Synchronous	41	21	20		12	29

Chi-square tests, ^aP<0.05, statistically significant.