Table 3: Features of PDAC identified on imaging studies and their discrepancies.

Modality

Pancreatic mass

Pancreatic ductal dilation

Perivascular soft tissue involvement1

Peripancreatic soft tissue involvement2

Omental lesions/ascites

Liver metastasis

Retroperitoneal/Peripancreatic LN

Total3

Non-contrast CT

5/5 (100)

4/3 (75)

3/0 (0)

8/0 (0)

3/0 (0

1/0 (0)

2/1 (50)

26/9 (34.6)

Contrast CT

14/10(71.4)

16/13 (81.3)

13/12 (92.3)

12/8 (66.7)

1/1 (100)

1/0 (0)

2/0 (0)

59/44(74.6)

Numbers within cells denote the total number of features/discrepancies (% discrepant). P-values reflect significant differences between non-contrast and contrast CT for the column. 1 - p=0.005, 2 - p=0.007, 3 - p=0.001.