Does cranial-medial mixed dominant approach have a unique advantage for laparoscopic right hemicolectomy with complete mesocolic excision?

Table 1 Basic patient preoperative characteristics

Item	CMA group (n= 26)	MA group (n= 31)	P value
Age (yr)	63.12 ± 13.65	61.35 ± 12.27	0.61
Sex			0.794
Male	14	18
Female	12	13
BMI (kg/m2)	21.42 ± 3.15	22.54 ± 3.43	0.209
Tumour size (cm)	5.18 ± 1.80	4.84 ± 2.06	0.52
Previous abdominal surgery			0.488
Yes	3	6
No	23	25
Tumour location			0.644
Ileocecal junction	7	6
Ascending colon	11	12
Flexura hepatica coli	8	13
Histological grade			0.185
Well	0	1
Moderate	18	26
Poor	8	4

CMA: Cranial-medial mixed dominant approach; MA: Medial approach.

Table 2 Comparison of intraoperative and postoperative conditions between the two groups

Item	CMA group (n= 26)	MA group (n= 31)	P value
Sample length (cm)	26.95 ± 6.18	27.926 ± 7.52	0.598
No. of lymph nodes collected	30.50 ± 15.31	23.81 ± 9.06	0.046
No. of positive lymph nodes	2.15 ± 2.99	1.45 ± 2.32	0.323
Nerve invasion			0.524
Yes	20	26
No	6	5
Vessel carcinoma embolus			0.432
Yes	14	20
No	12	11
Invasive depth			0.021
T1	2	1
T2	0	1
T3	8	1
T4	16	28
Lymph node metastasis			0.658
N0	13	19
N1	9	9
N2	4	3
pTNM
0	0	1	0.339
I	1	0
II	12	16
III	11	14
IV	2	0
Total operation time (min)	135.12 ± 17.47	150.61 ± 26.01	0.01
Laparoscopic procedure time (min)	69.73 ± 15.13	84.81 ± 21.48	0.003
Intraoperative blood loss (mL)	48.46 ± 30.07	67.10 ± 87.88	0.309
Exhaust time (d)	3.81 ± 1.92	4.45 ± 1.15	0.123
Liquid intake time (d)	5.27 ± 1.87	4.81 ± 1.22	0.266
Postoperative hospitalization (d)	12.23 ± 2.23	11.29 ± 2.02	0.101

CMA: Cranial-medial mixed dominant approach; MA: Medial approach.

Table 3 Comparison of complication rates between the two groups, n (%)

Item	CMA group (n= 26)	MA group (n= 31)	P value
Complications	6(23)	4(13)	0.486
Anastomotic fistula	0	0
Anastomotic stenosis	0	0
Bleeding	0	1
Lymphatic fistula	3	1
Ileus	2	0
Incisional hernia	0	1
Acute urine retention	0	0
Incision infection prevention	1	1
Intra-abdominal infection	0	0
Pulmonary infection	0	0

CMA: Cranial-medial mixed dominant approach; MA: Medial approach.