Yohei Koyama
7PUBLICATIONS
7CO-AUTHORS
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Publications (7)
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|Aug 22, 2025
Appendix Anchoring Approach: A novel method to prevent appendicitis post-appendiceal endoscopic submucosal dissection.Yohei Koyama, Miwako Arima, Terumitsu Anai
|Aug 30, 2023
Effect of COVID-19 infection on the gastrointestinal tract considering preventive methods during endoscopic procedures.Sakiko Naito, Itaru Nakamura, Tomohiro Umezu
|Jun 15, 2023
Underwater endoscopic submucosal dissection for colorectal tumors decreases the incidence of post-electrocoagulation syndrome.Yohei Koyama, Masakatsu Fukuzawa, Hiroyuki Aikawa
|May 26, 2023
Simple extraction method using a nontraumatic tube for impacted stool in a diverticulum near the ulcer floor after endoscopic submucosal dissection.Yohei Koyama, Masakatsu Fukuzawa, Fumito Yamanishi
|Feb 03, 2023
Unique endoscopic and histological findings of early gastric cancer with surrounding map-like redness detected 10 years after successful Helicobacter pylori eradication.Yohei Koyama, Takashi Kawai, Fumito Yamanishi
|Aug 30, 2022
Findings of collagenous colitis with minimal endoscopic changes using texture and color enhancement imaging.Yohei Koyama, Kumiko Uchida, Masakatsu Fukuzawa
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