Preoperative evaluation of pancreatic ductal adenocarcinoma with synchronous liver metastasis: Diagnosis and assessment of unresectability

Table 1 Clinicopathologic characteristics of 207 pancreatic ductal adenocarcinoma patients undergoing surgery

Parameter	No. of patients
	Simultaneous resections (Group A)	Palliative surgical bypass (Group B)	Total (Group A + Group B)	Pancreatectomy alone (Group C)
	n = 30	n = 39	n = 69	n = 138
Mean age ± SD, yr	62.2 ± 10.0	63.0 ± 10.4	62.6 ± 10.1	58.8 ± 10.6
Sex (Female)	10	12	22	45
ASA
I	11	10	21	37
II	19	27	46	97
III	0	2	2	4
IV	0	0	0	0
Primary tumor location
Head/neck	15	38	53	106
Body/tail	15	1	16	32
Median primary tumor size [IQR], cm	4.0 (2.5-5.0)	-	-	3.0 (2.0-3.5)
Pathology (PDAC)	30	39	69	138
TNM stage
I	0	0	0	22
IIA	0	0	0	22
IIB	0	0	0	94
III	0	0	0	0
IV	30	39	69	0
Primary tumor differentiation
Well/moderate	13	-	-	71
Poor	17	-	-	67
Ki67 [IQR], %	20 (8-30)	-	-	30 (15-50)
Venous invasion	3	19	22	37
Lymph node invasion	14	-	-	82
Hepatic metastasis	30	39	69	0
Surgery for primary tumor
Total pancreatectomy	1	0	1	5
Pancreaticoduodenectomy	11	0	11	95
Distal pancreatectomy	18	0	18	38
Palliative bypass	0	39	39	0