Farshadmand B.S. Jonathan, Rodriguez M.D. Neyshia, Kashfi M.D. Simon, Mehta M.D. Prachi, Massive Hematemesis as Initial Presentation of Advanced Pancreatic Adenocarcinoma, Journal of Clinical Case reports and Images, Volume 2, Issue 4, 2023, Pages 19-23, ISSN 2641-5518, https://doi.org/10.14302/issn.2641-5518.jcci-23-4743. (http://mail.oap-journals.orgjcci/article/2011) Keywords: pancreatic adenocarcinoma gastrointestinal bleed; upper gastrointestinal bleed; severe hematemesis; hemorrhagic shock; duodenal invasion