Analysis of liver metastasis after resection for pancreatic ductal adenocarcinoma

Table 2 Factors influencing liver metastasis after pancreatectomy for pancreatic ductal adenocarcinoma

	Liver metastasis (n = 41)	Non-liver metastasis (n = 60)	P-value
Location
Head	30	52	0.09
Body and tail	11	8
Size (cm)
< 3	23	45	0.04
≥ 3	18	15
Differentiation
Well, moderate	29	49	0.08
Poor	12	11
Perineural invasion
Yes	28	30	0.04
No	13	30
T-stage (AJCC, 6th)
1-2	1	5	0.21
3-4	40	55
N-stage
N0	23	24	0.13
N1	18	36
Resection margin
Positive	3	6	0.46
Negative	38	54
CA 19-9 (IU/mL)
< 37	4	20	0.001
≥ 37	28	20
Adjuvant CTx
Yes	14	26	0.41
No	27	34
Adjuvant RTx
Yes	16	29	0.32
No	25	31

CTx: Chemotherapy; RTx: Radiotherapy; AJCC: American Joint Cancer Committee; CA 19-9: Carbohydrate antigen 19-9.