SERum-bank for PANcreatic Cancer

ADENOCARCINOMA GROUP Inclusion Criteria: * Documented adenocarcinoma (cytology / anatomopathology), all stages, except if the tumor is immediately resectable and does not require preoperative cytological evidence. In this case, the inclusion and the first collection of the sero bank is done preoperatively. The diagnostic confirmation will therefore be made post-operatively at the risk of being excluded in the event of a different diagnosis. * At the start of treatment (before surgery / 1st course of chemotherapy) * Age ≥ 18 years * Patient affiliated or entitled to a social security system Exclusion Criteria: * Patient refusal * Acute renal failure * Child-Pugh B or C cirrhosis * Patient under guardianship or curators * Other synchronous cancer or history of cancer \<5 years * Language barrier CONTROL GROUP Inclusion Criteria: * Age ≥ 40 years * Patient affiliated or entitled to a social security system * Digestive endoscopy for any reason other than cancer or chronic inflammatory bowel disease Exclusion Criteria: * Patient refusal * Acute renal failure * Child-Pugh B or C cirrhosis * Patient under guardianship or curators * Other synchronous cancer or history of cancer \<5 years