TABLE 1.

Relationship between tumor location and clinicopathologic characteristics of DNA mismatch repair proficient (pMMR) colorectal cancer patients

pMMR
Characteristic (n = 107)	Right‐sided (n = 24)	%	Left‐sided (n = 83)	%	Total	P value
Sex
Male	15	63	56	67	71	.0652
Female	9	38	27	33	36
Age (y), median (range)
≤70	8	33	51	61	59	.0145*
>70	16	67	32	39	48
Tumor depth
T1‐2	2	8	7	8	9	.9875
T3‐4	22	92	76	92	98
Lymph node metastasis
Negative	17	71	40	48	57	.0470*
Positive	7	29	43	52	50
Tumor differentiation
Well/moderate	21	88	73	88	94	.9526
Others	3	12	10	12	13
Lymphatic invasion
Negative	12	50	35	42	47	.4971
Positive	12	50	48	58	60
Venous invasion
Negative	5	21	20	24	29	.7370
Positive	19	79	63	76	88
Perineural invasion
Negative	20	83	64	77	84	.5039
Positive	4	17	19	23	23
Adjuvant chemotherapy
No	17	71	49	59	66	.2885
Yes	7	29	34	41	41
Recurrence
No	8	33	23	28	33	.5963
Yes	16	67	60	72	84

^* P < .05