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Updated: Aug 16, 2026

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Diagnosis of Neoplasia in Barrett’s Esophagus using Vital-dye Enhanced Fluorescence Imaging
Published on: May 11, 2014
A signet-ring cell carcinoma of the ampulla of Vater
H A Gardner1, J Matthews, P S Ciano
1Department of Pathology, Beth Israel Hospital, Boston, MA 02215.
Archives of Pathology & Laboratory Medicine
|October 1, 1990
Abstract:
We describe a variant of carcinoma of the ampulla of Vater, which, to our knowledge, has not been previously described. Classic signet-ring cells represented the predominant cell type, and were admixed with more poorly differentiated tumor cells that were chromogranin positive. These findings raise the possibility of an amphicrine tumor of the ampulla.
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