Pathology 1996-Nov
Massive amyloid deposition in pancreatic vipoma: a case report.
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We present a case of a pancreatic islet cell tumor, demonstrating typical clinical and immunohistochemical characteristics of a VIPoma, but with the novel feature of massive stromal amyloid deposition. Amyloid deposition has been reported in association with insulinomas of the pancreas, but as far as the available literature suggests, it has not been reported in VIPomas. Islet associated polypeptide (IAPP) and calcitonin are both candidates for the amyloidogenic peptide in this case, based on observations in other tumors.