title: The asymptomatic pancreatic islet cell tumor: a novel presentation.
abstract: Pancreatic islet cell tumors that secrete one or several polypeptide hormones have been suspected and diagnosed secondary to their systemic manifestations. This case report details the diagnosis and treatment of an 62-year-old man with a large pancreatic islet cell tumor without symptoms in whom the mass was found as a direct result of blunt trauma to the abdomen. The tumor contained high concentrations of both vasoactive intestinal polypeptide (VIP) and somatostatin. A discussion of VIP-containing tumors is included.
mesh_terms: D000126:Achlorhydria / Q000175:diagnosis; D007516:Adenoma, Islet Cell / Q000032:analysis / Q000000981:diagnostic imaging*; D003967:Diarrhea / Q000175:diagnosis; D006801:Humans; D007008:Hypokalemia / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000032:analysis / Q000000981:diagnostic imaging*; D011859:Radiography; D014660:Vasoactive Intestinal Peptide / Q000032:analysis
chemical_list: D014660:Vasoactive Intestinal Peptide