Inclusion Criteria:  Consecutive patients scheduled for surgical removal of either a pancreatic, biliary or gastric lesion.  - Consecutive patients scheduled for primary surgical removal of early stage epithelial ovarian cancer (EOC), interval debulking surgery of EOC or surgical removal or tissue biopsy of recurrent EOC  Signed informed consent.  Common Exclusion Criteria for all study populations:  Age ≤18 year Pregnancy and lactation Significantly reduced renal function Allergy to iodinated contrast media Subjects that for some reason are unable to exercise their own rights, such as cognitive function impairment.  Additional Exclusion Criteria for study populations with either pancreatic-, gastric or bile duct cancer:  • Known metastatic disease