Simultaneous colonic metastasis of advanced gastric cancer: a case report

Background Although distant metastasis in gastric cancer can be present at the time of the initial diagnosis, colonic metastasis is extremely rare. This report describes a case of simultaneous colonic metastasis of advanced gastric cancer. Case presentation The patient was a 78-year-old woman with n...

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Bibliographic Details
Published in:Surgical case reports 2023-03, Vol.9 (1), p.39-5, Article 39
Main Authors: Shima, Takafumi, Arita, Asami, Sugimoto, Satoshi, Takayama, Shoichi, Kawaguchi, Nao, Imai, Yoshiro, Kitahara, Tomohiro, Maeda, Tamaki, Okuda, Junji
Format: Article
Language:English
Subjects:
Case Report
Case reports
Colonic metastasis
Colonoscopy
Gastric cancer
Medicine
Medicine & Public Health
Metastasis
Poorly differentiated adenocarcinoma
Signet ring cell carcinoma
Surgery
Tumors
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Summary:Background Although distant metastasis in gastric cancer can be present at the time of the initial diagnosis, colonic metastasis is extremely rare. This report describes a case of simultaneous colonic metastasis of advanced gastric cancer. Case presentation The patient was a 78-year-old woman with nausea and epigastric pain. Upper gastrointestinal endoscopy revealed an advanced invasive ulcerative tumor in the lesser curvature of the stomach extending from the anterior to the middle portion. Colonoscopy revealed a 4-mm polyp-like lesion in the mid-transverse colon; therefore, a polypectomy was performed. Both gastric and colonic tumors showed poorly differentiated adenocarcinoma with signet ring cell carcinoma. After providing informed consent, the patient underwent a total gastrectomy. Histologic examination showed similar morphologic features of both gastric and colonic tumors. Immunohistochemistry staining showed that these tumor cells were positive for cytokeratin (CK) 7 and negative for CK20. Conclusions This was an extremely rare case of simultaneous colonic metastasis of advanced gastric cancer. Because missed metastasis can result in a poorer prognosis, we propose a systemic search including colonoscopy for patients with advanced gastric cancer, especially cases involving poorly differentiated adenocarcinoma or signet ring cell carcinoma.
ISSN:2198-7793
2198-7793
DOI:10.1186/s40792-023-01622-x