Two Years' Intensive Training in Endoscopic Diagnosis Facilitates Detection of Early Gastric Cancer
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概要
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Objective Early detection of gastric cancer by screening endoscopy facilitates endoscopic treatment in place of open surgery. The aim of this study was to evaluate whether 2 years intensive training improved the detection of gastric cancer by screening endoscopy. Methods An endoscopist who had trained for 6 years as a general physician, performed screening endoscopy at Imari Arita Kyoritsu Hospital before (group I) and after (group II) intensive training in the diagnosis of early gastric cancer in consecutive patients. Results Background characteristics, including age (61.6 vs. 62.2 years) and sex, did not differ between the groups. Before training, 10 gastric neoplasms were detected in 937 patients in group I: four early gastric cancers, one gastric adenoma, and five advanced gastric cancer. After training, 36 gastric neoplasms were detected in 937 patients in group II: 18 early gastric cancers, 11 gastric adenoma, five advanced gastric cancer, and one each of gastric carcinoid and malignant lymphoma. The detection rate for early gastric cancer was significantly improved by training [group I: 4/937 (0.4%) vs. group II: 18/937 (1.9%)], although the detection rate for advanced gastric cancer did not differ before and after training. The proportion of early gastric cancer + adenoma to advanced cancer was higher in group II (5/5 vs. 29/5 in group I). Conclusion Intensive training in upper gastrointestinal endoscopy screening dramatically improved the detection rate for early gastric cancer, although the detection rate for advanced gastric cancer was not affected.
著者
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Oyama Tsuneo
Department Of Gastroenterology Saku Central Hospital
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Mannen Kotaro
Department Of Internal Medicine And Gastrointestinal Endoscopy Saga Medical School
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Shimoda Ryo
Department Of Gastroenterology Saga University
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Toda Shuji
Department Of Internal Medicine And Gastrointestinal Endoscopy Saga Medical School
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Inoue Fumio
Department Of Cardiology Nihon University School Of Medicine
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Iwakiri Ryuichi
Department of Internal Medicine & Gastrointestinal Endoscopy, Saga Medical School
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Shimoda Ryo
Department of Internal Medicine, Saga Medical School, Japan
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Fujimoto Kazuma
Department of Internal Medicine & Gastrointestinal Endoscopy, Saga Medical School
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Toda Shuji
Department of Pathology and Biodefense, Saga Medical School, Japan
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Yamazato Tetsuro
Department of Gastroenterology, Tokyo Metropolitan Cancer Detection Center, Japan
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Yoshida Toshifumi
Foundation for Detection of Early Gastric Carcinoma, Japan
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Baba Yasumasa
Foundation for Detection of Early Gastric Carcinoma, Japan
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Yamanouchi Kohei
Department of Internal Medicine, Saga Medical School, Japan
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Ishii Yoshitomo
Department of Internal Medicine, Imari Arita Kyouritsu Hospital, Japan
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Oyama Tsuneo
Department of Gastroenterology, Saku Central Hospital, Japan
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