Triple gastrointestinal malignancies with tumor-to-tumor metastasis from gastric adenocarcinoma to small bowel adenocarcinoma: A case report

doi:10.4251/wjgo.v18.i4.115614

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World Journal of Gastrointestinal Oncology

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1948-5204

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Case Report

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Oncol. Apr 15, 2026; 18(4): 115614
Published online Apr 15, 2026. doi: 10.4251/wjgo.v18.i4.115614

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Figure 4 Histopathological examination of the resected small bowel mass showed. A: A primary small bowel moderately differentiated adenocarcinoma; B: A metastatic Gastric mucinous adenocarcinoma; C: Co-existing primary small bowel adenocarcinoma (left) and metastatic gastric mucinous adenocarcinoma (right); D: Cytokeratin 7 immunohistochemical stain highlights the gastric adenocarcinoma; E and F: Cytokeratin 20 and CDX-2 immunohistochemical stains highlight the small bowel adenocarcinoma.

Citation: AlQattan AS, Binkhamis L, Foula MS, Alsalim A, Alselwi WM, Alzahir AA. Triple gastrointestinal malignancies with tumor-to-tumor metastasis from gastric adenocarcinoma to small bowel adenocarcinoma: A case report. World J Gastrointest Oncol 2026; 18(4): 115614
URL: https://www.wjgnet.com/1948-5204/full/v18/i4/115614.htm
DOI: https://dx.doi.org/10.4251/wjgo.v18.i4.115614

AlQattan AS, Binkhamis L, Foula MS, Alsalim A, Alselwi WM, Alzahir AA. Triple gastrointestinal malignancies with tumor-to-tumor metastasis from gastric adenocarcinoma to small bowel adenocarcinoma: A case report. World J Gastrointest Oncol 2026; 18(4): 115614 [DOI: 10.4251/wjgo.v18.i4.115614]

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