Table I.

Clinical and histopathological characteristics in CME (n = 31) and non-CME (n = 35) group

Parameter	CME group (n = 31) n (%) or mean (range)	Non-CME group (n = 35) n (%) or mean (range)	P-value
Age [years]	75 (55–84)	69 (29–89)	0.024
Gender:
Male	14 (45)	17 (49)	0.167
Female	17 (55)	18 (51)	0.158
ASA classification:
ASA I	0 (0)	6 (17)	< 0.001
ASA II	14 (45)	11 (32)	0.018
ASA III	17 (58)	18 (51)	0.658
Site of tumor:
Caecum	6 (19)	9 (26)	0.081
Ascending colon	10 (32)	6 (17)	0.034
Transverse colon	2 (7)	5 (13)	0.146
Hepatic flexure	2 (7)	3 (9)	0.473
Splenic flexure	0 (0)	1 (3)	< 0.001
Descending colon	0 (0)	1 (3)	< 0.001
Sigmoid colon	11 (35)	10 (29)	0.537
Surgical procedure:
Right hemicolectomy	16 (52)	15 (42)	0.586
Sigmoidectomy	11 (35)	10 (29)	0.537
Subtotal colectomy	2 (7)	2 (6)	0.894
Extended right hemicolectomy	2 (7)	8 (23)	0.034
Type of surgery:
Elective	24 (77)	27 (77)	0.769
Emergency	7 (23)	8 (23)	0.128
Tumor stage:
pT2	9 (29)	5 (14)	0.027
pT3	18 (58)	27 (77)	0.015
pT4	4 (13)	3 (9)	0.489
pN0	15 (48)	21 (60)	0.137
pN+:	16 (52)	14 (40)	0.494
pN1	9 (29)	7 (20)	0.149
pN2	7 (23)	7 (20)	0.892
M0	27 (87)	32 (91)	0.917
M1	4 (13)	3 (9)	0.649
Hepatic	4	2 (6)	0.337
Peritoneal		1 (3)	< 0.001
Lymph node yield and ratio:
Lymph node yield	29.6	17.85	< 0.001
LNR (UICC stage III)	0.095	0.18	0.01
LNR (overall)	0.12	0.24	< 0.001
UICC stage:
I	9 (29)	5 (14)	0.027
II	6 (19)	16 (46)	< 0.001
III	12 (39)	11 (31)	0.559
IV	4 (13)	3 (9)	0.489
Tumor grade:
Well-differentiated (G1)	0 (0)	0 (0)	NS
Moderately differentiated (G2)	21 (68)	30 (86)	< 0.001
Poorly differentiated (G3)	10 (32)	5 (14)	< 0.001