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KMID : 1038120180510030253
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Clinical Endoscopy
2018 Volume.51 No. 3 p.253 ~ p.259
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Metachronous Gastric Cancer Following Curative Endoscopic Resection of Early Gastric Cancer
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Abe Seiichiro
Oda Ichiro
Minagawa Takeyoshi
Sekiguchi Masau
Nonaka Satoru
Suzuki Haruhisa
Yoshinaga Shigetaka
Bhatt Amit
Saito Yutaka
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Abstract
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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.
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KEYWORD
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Metachronous gastric cancer, Endoscopic resection, Endoscopic mucosal resection, Helicobacter pylori, Surveillance endoscopy
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