Yohei Koyama

Publication Activity (10 Years)

Years Active: 2022-2023
Publications (10 Years): 8

Top Topics

Endoscopic Submucosal Dissection

Helicobacter Pylori

Ultrasound Guided

Top Venues

Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society

Journal of gastroenterology and hepatology

This page only lists publications with an associated author ORCID identifier.

Publications

Yohei Koyama, Takashi Kawai, Fumito Yamanishi, Sho Matsumoto, Masakatsu Fukuzawa, Jun Matsubayashi, Takao Itoi
Unique endoscopic and histological findings of early gastric cancer with surrounding map-like redness detected 10 years after successful Helicobacter pylori eradication. Endoscopy 55 (S 01) (2023)
Yohei Koyama, Masakatsu Fukuzawa, Hiroyuki Aikawa, Daiki Nemoto, Takahiro Muramatsu, Taisuke Matsumoto, Kumiko Uchida, Akira Madarame, Takashi Morise, Hayato Yamaguchi, Shin Kono, Naoyoshi Nagata, Mitsushige Sugimoto, Takashi Kawai, Yutaka Saito, Takao Itoi
Underwater endoscopic submucosal dissection for colorectal tumors decreases the incidence of post-electrocoagulation syndrome. Journal of gastroenterology and hepatology (2023)
Sakiko Naito, Itaru Nakamura, Tomohiro Umezu, Akihiro Hata, Akira Madarame, Kumiko Uchida, Yohei Koyama, Takashi Morise, Hayato Yamaguchi, Shin Kono, Mitsushige Sugimoto, Takashi Kawai, Yuichiro Harada, Masahiko Kuroda, Masakatsu Fukuzawa, Takao Itoi
Effect of COVID-19 infection on the gastrointestinal tract considering preventive methods during endoscopic procedures. DEN open 4 (1) (2023)
Yohei Koyama, Masakatsu Fukuzawa, Fumito Yamanishi, Taisuke Matsumoto, Hayato Yamaguchi, Takashi Kawai, Takao Itoi
Simple extraction method using a nontraumatic tube for impacted stool in a diverticulum near the ulcer floor after endoscopic submucosal dissection. Endoscopy 55 (S 01) (2023)
Yohei Koyama, Takashi Kawai, Fumito Yamanishi, Sho Matsumoto, Masakatsu Fukuzawa, Jun Matsubayashi, Takao Itoi
Unique endoscopic and histological findings of early gastric cancer with surrounding map-like redness detected 10 years after successful Helicobacter pylori eradication. Endoscopy 55 (S 01) (2023)
Yohei Koyama, Takashi Kawai, Fumito Yamanishi, Sho Matsumoto, Masakatsu Fukuzawa, Jun Matsubayashi, Takao Itoi
Unique endoscopic and histological findings of early gastric cancer with surrounding map-like redness detected 10 years after successful Helicobacter pylori eradication. Endoscopy 55 (S 01) (2023)
Yohei Koyama, Kumiko Uchida, Masakatsu Fukuzawa
Findings of collagenous colitis with minimal endoscopic changes using texture and color enhancement imaging. Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 34 (7) (2022)
Yohei Koyama, Seiichiro Abe, Takao Itoi
Extensive perforation of the esophagus caused by a localized muscle layer defect during endoscopic submucosal dissection. Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 34 (3) (2022)