Short-term and medium-term clinical outcomes of laparoscopic-assisted and open surgery for colorectal cancer: a single center retrospective case-control study

Table 2 Pathological Parameters

		LAP (n = 254)		OP (n = 265)		P
		n	%	n	%
Location	Right-hemi Colon	70	27.6	72	27.2	0.896
	Transverse Colon	3	1.2	6	2.2
	Left-hemi Colon	16	6.2	15	5.7
	Sigmoid Colon	65	25.6	68	25.7
	Rectum	100	39.4	104	39.2
Tumor Size (cm, mean ± SD)		4.7 ± 1.7		4.8 ± 1.9		0.579
Proximal Margin for colon cancer (cm)^a		12.7 ± 6.8		11.4 ± 4.1		0.000
Distal Margin for colon cancer (cm)^a		10.7 ± 6.7		9.8 ± 5.7		0.189
Proximal Margin for rectum cancer (cm)^b		11.4 ± 4.3		11.7 ± 4.7		0.573
Distal Margin f for rectum cancer(cm)^b		4.8 ± 3.1		4.0 ± 1.7		0.052
Total Sample Length(cm)		26.3 ± 10.5		25.4 ± 8.9		0.302
Lymph Nodes Retrieved		12.0 ± 6.9		11.4 ± 7.1		0.327
Pathological Results
	Differentiation					0.222
	Well-differentiated	51	20.1	53	20.0
	Moderate-differentiated	172	67.7	166	62.6
	Poor-differentiated	16	6.3	17	6.5
	Mucinous	15	5.9	29	10.9
	pT					0.362
	pT1	33	13.0	27	10.2
	pT2	63	24.8	52	19.6
	pT3	75	29.5	107	40.4
	pT4	83	32.7	79	29.8
	pN					0.661
	pN0	104	40.9	117	44.2
	pN1	83	32.7	81	30.6
	pN2	67	26.4	67	25.3
	Lymph Nodes Metastasis					0.478
	Yes	150	59.1	148	55.8
	No	104	40.9	117	44.2
	TMN Stage					0.286
	I	26	10.2	17	6.4
	II	103	40.6	111	41.9
	III	125	49.2	137	51.6

ISSN: 1471-230X