Inclusion criteria:  Participation in the PACAP cohort with written informed consent for being randomized in future studies Histologically confirmed macroscopically radical resected (R0-R1) pancreatic adenocarcinoma Minimum age of 18 years  Exclusion Criteria:  Exclusion criteria for contrast-enhanced CT-scan, following the protocol of the department of radiology in each DPCG-affiliated hospital Mentally or physically incapable of consent Participation in other studies with a study-specific follow-up