RADIOLOGY: PANCREAS: Case# 33591: PANCREATIC NEUROENDOCRINE (VIPOMA). 67 year old female with 1 year history of secretory diarrhea which is responsive only to somatostatin. Past medical history significant for right mastectomy 6 years ago and right leg melanoma removed 13 years ago. 1. 4 x 6 cm heterogeneously enhancing mass in the tail of the pancreas which is hypervascular. Neuroendocrine tumor is felt to be most likely. Adenocarcinoma of the pancreas is also a possibility. 2. Fluid-filled small and large bowel consistent with patients history of secretory diarrhea.