Short- and long-term results of open vs laparoscopic multisegmental resection and anastomosis for synchronous colorectal cancer located in separate segments

Table 1 Basic characteristics between laparoscopic group and open group, n (%)

Variable	OMRA group, n = 41	LMRA group, n = 68	P value
Age (yr)
≤ 65	24 (58.5)	31 (45.6)	0.190
> 65	17 (41.5)	37 (54.4)
Gender
Female	14 (34.1)	26 (38.2)	0.668
Male	27 (65.9)	42 (61.8)
ASA physical status			0.058
I-II	33 (80.5)	63 (92.6)
III	8 (19.5)	5 (7.4)
Concomitant diseases
No	19 (46.3)	29 (42.6)	0.707
Yes	22 (53.7)	39 (57.4)
History of abdominal surgery
No	30 (73.2)	56 (82.4)	0.255
Yes	11 (26.8)	12 (17.6)
Preoperative chemotherapy
No	39 (95.1)	68 (100)	0.139
Yes	2 (4.9)	0 (0)
Tumor size1, cm
≤ 5	20 (50.0)	40 (58.8)	0.373
> 5	20 (50.0)	28 (41.2)
Tumor differentiation
Well-moderate	24 (58.5)	32 (47.1)	0.245
Poor	17 (41.5)	36 (52.9)
pT stage
T1-T2	2 (4.9)	7 (10.3)	0.525
T3-T4	39 (95.1)	61 (89.7)
pN stage
N0	16 (39.0)	25 (36.8)	0.915
N1	19 (46.3)	31 (45.6)
N2	6 (14.6)	12 (17.6)
Stage
I	1 (2.4)	6 (8.8)	0.338
II	15 (36.6)	19 (27.9)
III	25 (61.0)	43 (63.2)
CEA
≤ 5	19 (46.3)	31 (45.6)	0.929
> 5	13 (31.7)	20 (29.4)
Unknown	9 (22.0)	17 (25.0)
CA199
≤ 37	28 (68.3)	42 (61.8)	0.696
> 37	3 (7.3)	9 (13.2)
Unknown	10 (24.4)	17 (25.0)
Postoperative chemotherapy
No	20 (48.8)	30 (44.1)	0.636
Yes	21 (51.2)	38 (55.9)

¹Unknown for one patient.

OMRA: Open multisegmental resection and anastomosis; LMRA: Laparoscopic multisegmental resection and anastomosis; CA19-9: Carbohydrate antigen 19-9; CEA: Carcinoembryonic antigen; ASA: American Society of Anesthesiologists.