A 57-year-old woman with a 40 pack-year history of smoking and a long history of Type 2 Diabetes presents with fatigue, middle abdominal pain, and loss of appetite. She indicates that these bouts have been coming and going for the last few months and she finally decided to get checked out. She indicates that she has also lost considerable weight. On physical examination, she appears mildly jaundiced. You perform a CT scan that reveals a mass in the pancreas.

What is the most likely diagnosis?

A) Gastrinoma
B) Adenocarcinoma
C) Teratoma
D) Insulinoma
E) Pancreatic sarcoma