Preoperative defining system for pancreatic head cancer considering surgical resection

Table 2 Univariate analysis to predict combined venous vascular resection in treating pancreatic head cancer

	Combined venous vascular resection		P value
	No	Yes
Resectability
R	54	21
BR	17	17
LA	2	2	0.054
Radiologic tumor size (cm)	2.3 ± 0.7	2.6 ± 0.8	0.044
Tumor location
Head	49	24
Uncinate	22	13
Including neck	2	3	0.485
Radiologic vascular component
No	52	21
Yes	21	19	0.002
Initial preoperative serum CA19-9	846.7 ± 2193.9	805.3 ± 1761.9	0.919
Initial serum total bilirubin	4.3 ± 5.0	4.9 ± 4.6	0.528

R: Resectable pancreatic cancer; BR: Resectable pancreatic cancer; LA: Locally advanced pancreatic cancer.