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 4

Multivariate analysis of vascular and nonvascular variables on margin status.

	Any Positive Margin		Positive SMA Margin
	OR	-value	OR	-value
Vascular classification		0.0083		0.03
Both Clean	1 (ref)		1 (ref)
Vein un-involved, Artery involved	0.9	0.93	2.5	0.33
Artery un-involved, Vein involved	1.7	0.43	3.6	0.07
Both Involved	10.2	0.0007	6.3	0.0044
Positive lymph nodes
No	1 (ref)		1 (ref)
Yes	3.0	0.069	1.0	0.97
CA 19-9 level		0.93		0.28
<50	1 (ref)		1 (ref)
50-250	0.8	0.76	0.8	0.72
>250	1	0.98	2.0	0.26