This case study describes a 77-year-old man who presented with jaundice, weight loss, and an abdominal mass. Imaging revealed a pancreatic head mass obstructing the bile duct. Biopsy confirmed pancreatic adenocarcinoma. The document then summarizes the types of pancreatic tumors, signs and symptoms, diagnosis, and treatment of exocrine pancreatic cancer and pancreatic neuroendocrine tumors. It describes functioning tumors that secrete hormones and non-functioning tumors, as well as specific types such as insulinomas and gastrinomas. Diagnostic tests like CT, biopsy, and tumor markers are discussed along with surgical and medical management options.