Laparoscopic versus open pancreatic resection for ductal adenocarcinoma: separate propensity score matching analyses of distal pancreatectomy and pancreaticoduodenectomy

Table 4 Separate comparison of pathological examination

Variable	LDP (n = 86)	ODP (n = 86)	p value	LPD (n = 101)	OPD (n = 101)	p value
Tumor size^a	41. ± 1.5	4.2 ± 1.4	0.97	3.0 ± 0.9	3.1 ± 1.0	0.60
Differentiation			0.84			0.56
Well	34	36		33	39
Moderate	31	27		40	40
Poor	21	23		28	22
Radical R0 resection (%)	83 (96.5%)	78 (90.7%)	0.12	94 (93.1%)	90 (89.1%)	0.32
Retrieved lymph node^a	14.4 ± 5.2	12.7 ± 5.0	0.03	22.6 ± 6.5	21.0 ± 6.2	0.07
Vascular invasion (%)	17 (19.8%)	18 (20.9%)	0.85	17 (16.8%)	20 (19.8%)	0.59
Perineural invasion (%)	41 (47.7%)	38 (44.2%)	0.65	44 (43.6%)	45 (44.6%)	0.89
Pathologic T stage			0.93			0.97
T1	3	4		14	15
T2	44	45		72	72
T3	39	37		15	14
Pathologic N stage			0.66			0.60
N0	42	46		50	53
N1	35	29		44	38
N2	9	11		7	10

a: values were showed as mean (standard deviation) and tested by Student’s t test

ISSN: 1471-2407