Table 3.
The univariate and multivariate analysis of patients with SPL in the training set
| Imaging features | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p value | OR | 95% CI | p value | |
| Nodule size (cm) | 1.20 | 0.97–1.49 | .11 | -- | -- | -- |
| Location (head or body/tail) | 0.67 | 0.34–1.31 | .24 | -- | -- | -- |
| MPD dilation (≥ 4 mm) | 14.98 | 5.59–52.31 | < .001 | 9.37 | 2.59–43.05 | .001 |
| CBD dilation (≥ 10 mm) | 16.21 | 3.25–294.59 | .007 | 1.20 | 0.13–28.80 | .89 |
| Ill-defined border | 28.83 | 11.98–77.37 | < .001 | 10.77 | 3.42–37.78 | < .001 |
| Adjacent vessel involvement | 11.75 | 2.31–214.80 | .02 | 5.77 | 0.57–158.03 | .20 |
| Necrotic contents | 1.88 | 0.68–6.06 | .25 | -- | -- | -- |
| CEUS enhancement pattern† | ||||||
| Pattern A | -- | -- | Reference | -- | -- | Reference |
| Pattern B | 48.89 | 17.58–157.56 | < .001 | 15.19 | 4.17–63.81 | < .001 |
| Pattern C | 7.49 | 2.60–23.71 | < .001 | 2.28 | 0.49–10.73 | .29 |
Variables with p < 0.1 in the univariate analysis were included in the multivariate analysis
OR odd ratio, CI confidence intervals, MPD main pancreatic duct, CBD common bile duct, CEUS contrast-enhanced ultrasound, AP arterial phase, VP venous phase
†Pattern A: hyperenhancement in both the AP and VP, hyper- or isoenhancement in the AP followed by isoenhancement in the VP, or no enhancement through either phase; pattern B: hypoenhancement in both the AP and VP; and pattern C: iso- or hyperenhancement in the AP followed by hypoenhancement in the VP