Clin Endosc.  2018 May;51(3):253-259. 10.5946/ce.2017.104.

Metachronous Gastric Cancer Following Curative Endoscopic Resection of Early Gastric Cancer

Affiliations
  • 1Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan. seabe@ncc.go.jp
  • 2Department of Gastroenterology, Tonan Hospital, Sapporo, Japan.
  • 3Department of Gastroenterology and Hepatology, Digestive Disease Institute, Cleveland, OH, USA.

Abstract

This review article summarizes knowledge about metachronous gastric cancer (MGC) occurring after curative endoscopic resection (ER) of early gastric cancer (EGC), treatment outcomes of patients who developed MGC, and efficacy of Helicobacter pylori eradication to prevent MGC. The incidence of MGC following curative ER increases over time and is higher than in patients undergoing gastrectomy. Increasing age and multifocal EGC are independent risk factors for developing MGC. An MGC following curative ER is usually a small ( < 20 mm) and differentiated intramucosal cancer. Most MGC lesions are found at an early stage on semiannual or annual surveillance endoscopy and are successfully treated by further ER, with excellent long-term outcomes. Eradication of H. pylori may reduce the risk of MGC following ER of EGC, but further prospective studies with long-term outcomes are required. Surveillance endoscopy following gastric ER should be continued indefinitely, due to the risk of MGC even after successful H. pylori eradication. Risk stratification and tailored endoscopic surveillance schedules need to be developed.

Keyword

Metachronous gastric cancer; Endoscopic resection; Endoscopic mucosal resection; Helicobacter pylori; Surveillance endoscopy

MeSH Terms

Appointments and Schedules
Endoscopy
Gastrectomy
Helicobacter pylori
Humans
Incidence
Prospective Studies
Risk Factors
Stomach Neoplasms*
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