A Surgical Procedure (Total Pancreatectomy) With a Transplant Procedure (Islet Cell Autotransplantation) for the Treatment of Chronic Pancreatitis and Benign Pancreatic Tumors

PRIMARY OBJECTIVE: I. To evaluate the oncologic safety of total pancreatectomy with islet cell autotransplantation (TPIAT) in chronic pancreatitis patients with benign pancreatic neoplasms. SECONDARY OBJECTIVES: I. To evaluate postoperative insulin requirements in patients with presumed benign pancreatic neoplasms undergoing TPIAT. II. To evaluate postoperative opiate requirements in patients with presumed benign pancreatic neoplasms undergoing TPIAT. III. To evaluate the postoperative survival of patients with presumed benign pancreatic neoplasms undergoing TPIAT. EXPLORATORY OBJECTIVES: I. To evaluate quality of life outcomes in patients undergoing TPIAT with presumed benign pancreatic neoplasms. II. To evaluate subjective pain-related outcomes in patients undergoing TPIAT with presumed benign pancreatic neoplasms. OUTLINE: Patients undergo total pancreatectomy and autologous islet cell transplant intravenously (IV) over 15-60 minutes on day 1. After completion of study treatment, patients are followed up for 2 years.