Publication Name	World Journal of Gastrointestinal Oncology
Manuscript ID	115614
Country	Saudi Arabia

Category	Oncology
Manuscript Type	Case Report
Article Title	Triple gastrointestinal malignancies with tumor-to-tumor metastasis from gastric adenocarcinoma to small bowel adenocarcinoma: A case report
Manuscript Source	Unsolicited Manuscript
All Author List	Abdullah Saleh ALQattan, Lujain Binkhamis, Mohammed S Foula, Alaa Alsalim, Waleed Mohammed Alselwi and Ali Ahmad Alzahir
Funding Agency and Grant Number
Corresponding Author	Lujain Binkhamis, Chief Physician, Department of Surgery, King Fahad Hospital of The University, Imam Abdulrahman Bin Faisal University, King Faisal Streat, Khobar 34446, Saudi Arabia. binkhamis.lujain@gamil.com
Key Words	Collision tumor; Gastric adenocarcinoma; Seed and soil; Small bowel adenocarcinoma; Tumor to tumor metastasis; Case report
Core Tip	Metastatic involvement of the small intestine usually results from direct invasion by adjacent organs, while hematogenous spread is rare. Interestingly, metastatic tumors are more common than primary small bowel malignancies due to protective mucosal and immunological factors. Tumor-to-tumor metastasis is an exceptionally rare event, defined as the growth of a metastatic tumor within another primary neoplasm. Among reported cases, renal cell carcinoma is the most frequent recipient, and gastric primaries are exceedingly uncommon. This report presents the first documented case of Recurrent gastric adenocarcinoma metastasizing into a primary small bowel adenocarcinoma, highlighting the importance of thorough histopathological evaluation.
Citation	ALQattan AS, Binkhamis L, Foula MS, Alsalim A, Alselw 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; In press

Received	2025-10-27 08:05
Peer-Review Started	2025-10-27 08:05
First Decision by Editorial Office Director	2025-12-09 06:57
Return for Revision	2025-12-09 06:57
Revised	2025-12-23 15:04
Publication Fee Transferred
Second Decision by Editor	2026-02-10 02:46
Second Decision by Editor-in-Chief
Final Decision by Editorial Office Director	2026-02-10 09:31
Articles in Press	2026-02-10 09:31
Edit the Manuscript by Language Editor
Typeset the Manuscript

ISSN	1948-5204 (online)
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