The Utility of Preoperative Vascular Grading in Patients Undergoing Surgery First for Pancreatic Cancer: Does Radiologic Arterial or Venous Involvement Predict Pathologic Margin Status?

Table 3

Multivariate analysis of vascular classification and margin status.

	Any Positive Margin		Positive SMA Margin		Positive SMV Margin
	OR	-value	OR	-value	OR	-value
Ishikawa Classification
I	1 (ref)		1 (ref)		1 (ref)
II-IV	4.3	0.0023	4.4	0.0036	3.9	0.048
Arterial Classification
i	1 (ref)		1 (ref)		1 (ref)
ii-iii	4.2	0.0046	3.4	0.020	1.4	0.68
Combined		0.2081		0.8		0.79
Both Clean	1 (ref)		1 (ref)		1 (ref)
Both Involved	9.2	0.0084	6.1	0.0243	3.1	0.0084