Preoperative prediction of peripancreatic vein invasion by pancreatic head cancer

Cancer Imaging

Table 2 Univariate and multivariate analyses of risk factors for histological venous invasion in the training cohort

Variables	Univariate analysis			Multivariate analysis
Variables	OR	95% CI	P value	OR	95% CI	P value
Gender (male/female)	1.836	0.825–4.088	0.137
Age, years	1.076	1.028–1.125	0.002	1.046	0.983–1.113	0.156
ADL (grade I/>grade I)	1.732	0.695–4.316	0.238
Jaundice (present/absent)	1.010	0.445–2.289	0.982
Pain (present/absence)	1.281	0.575–2.854	0.545
Weight loss (present/absent)	2.625	1.095–6.292	0.030	1.788	0.606–5.279	0.293
CA19–9, U/mL	1.000	1.000–1.000	0.272
TB, μmol/L	0.998	0.994–1.002	0.242
Albumin, g/L	1.014	0.924–1.114	0.763
Lymph node staging on CT (N1/N0)	1.216	0.549–2.695	0.630
Tumor size on CT, cm	1.010	0.790–1.293	0.934
Length of tumor contact on CT, cm	3.425	1.940–6.047	< 0.001	2.067	1.070–3.995	0.031
Circumferential vein involvement on CT (>180°/90–180/≤ 90°)	4.443	2.297–8.595	< 0.001	2.207	1.008–4.832	0.048
Venous contour abnormalities on CT	3.004	0.022–4.463	< 0.001	2.121	1.368–3.289	0.001
Type of vessels involvement on CT (PV/SMV/PV + SMV)	1.132	0.671–1.910	0.641

ADL activities of daily living, CA 19–9 carbohydrate antigen 19–9, TB total bilirubin, PV portal vein, SMV superior mesenteric vein

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