Pancreas Volume and Diabetes Status Following Pancreatectomy

This study will enroll 100 patients scheduled to undergo a pancreatectomy. The primary objective is to develop a scoring system using pancreatic volume measured by CT scan and intraoperative measurements of the pancreas parenchyma to predict the onset of diabetes mellitus after a pancreatectomy. The investigators will also monitor patients with pre-existing diabetes to see if their diabetes worsens or improves.