免許・資格等 20220101 , 日本食道学会食道科認定医 20211101 , 日本消化管学会胃腸科専門医 20200101 , 日本消化器病学会指導医 20160701 , カナダ オンタリオ州医師免許 The College of Physicians and Surgeons of Ontario (CPSO) 20151201 , 日本消化器内視鏡学会指導医 20120101 , 日本消化器病学会消化器病専門医 20111201 , 日本消化器内視鏡学会消化器内視鏡専門医 20101210 , 日本内科学会総合内科専門医 20101101 , 日本ヘリコバクター学会H.pylori（ピロリ菌）感染症認定医 20071002 , 日本内科学会認定内科医
研究職歴等
留学歴 2016-2018 , カナダ トロント大学 セントマイケルズ病院 先端治療内視鏡センター
研究活動業績
研究業績（著書・ 発表論文等）
論文 Clinicopathological features of nodular gastritis in three classes of age HELICOBACTER,26(6):e12845 2021(Dec.) Author:Kako, Satoko; Iwaya, Yugo; Nagaya, Tadanobu; Hara, Daichi; Okamura, Takuma; Iwaya, Mai; Kurasawa, Shingo; Kato, Sawako; Nakayama, Yoshiko; Akamatsu, Taiji; Umemura, Takeji; Keywords:classes of age; inflammation; nodular gastritis; pangastritis; updated Sydney System score;
Diagnostic yield of fourth-generation endocytoscopy for esophageal squamous lesions using a modified endocytoscopic classification DIGESTIVE ENDOSCOPY,33(7):1093-1100 2021(Nov.) Author:Shimamura, Yuto; Inoue, Haruhiro; Rodriguez de Santiago, Enrique; Abad, Mary Raina Angeli; Fujiyoshi, Yusuke; Toshimori, Akiko; Tanabe, Mayo; Sumi, Kazuya; Iwaya, Yugo; Ikeda, Haruo; Onimaru, Manabu; Kushima, Miki; Goda, Kenichi; Keywords:cancer; diagnostic imaging; endoscopy; esophagus; image enhanced endoscopy;
Clinical and pathological predictors of failure of endoscopic therapy for Barrett's related high-grade dysplasia and early esophageal adenocarcinoma SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES,35(10):5468-5479 2021(Oct.) Author:Shimamura, Yuto; Iwaya, Yugo; Kobayashi, Ryosuke; Rodriguez de Santiago, Enrique; Muwanwella, Niroshan; Raftopoulos, Spiro; Mosko, Jeffrey D.; May, Gary R.; Kandel, Gabor; Kortan, Paul; Marcon, Norman; Teshima, Christopher W.; Keywords:Endoscopy; Endoscopic resection; Barrett's esophagus; Cancer; Esophageal adenocarcinoma;
Predictors of recurrence of dysplasia or cancer in patients with dysplastic Barrett's esophagus following complete eradication of dysplasia: a single-center retrospective cohort study SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES 2021 Author:Kobayashi, Ryosuke; Calo, Natalia Causada; Marcon, Norman; Iwaya, Yugo; Shimamura, Yuto; Honda, Hirokazu; Streutker, Catherine; Mosko, Jeffrey; May, Gary; Teshima, Christopher; Keywords:Barrett's esophagus; Dysplasia; Radiofrequency ablation; Endoscopic mucosal resection; Recurrence;
Endoscopic pressure study integrated system reflects gastroesophageal junction competence in patients with erosive esophagitis and Barrett ' s esophagus DIGESTIVE ENDOSCOPY,32(7):1050-1056 2020(Nov.) Author:Iwaya, Yugo; Inoue, Haruhiro; de Santiago, Enrique Rodriguez; Abad, Mary Raina Angeli; Fujiyoshi, Yusuke; Ueno, Akiko; Tanabe, Mayo; Sumi, Kazuya; Tomida, Hideomi; Ominami, Masaki; Ikeda, Haruo; Onimaru, Manabu; Shimamura, Yuto; Keywords:Barrett's esophagus; diagnosis; endoscopy; erosive esophagitis; gastroesophageal reflux;
A REVIEW OF THE GEOGRAPHICAL DISTRIBUTION AND IMPACT OF LOCATION ON TIME TO TREATMENT IN PATIENTS WITH BARRETT'S ESOPHAGUS ASSOCIATED HIGH-GRADE DYSPLASIA AND INTRAMUCOSAL CANCER: A CANADIAN TERTIARY CENTER EXPERIENCE GASTROINTESTINAL ENDOSCOPY,91(6):AB158-AB158 2020(Jun.) Author:Li, Suqing; Calo, Natalia C.; Kobayashi, Ryosuke; Iwaya, Yugo; Marcon, Norman E.; May, Gary R.; Mosko, Jeffrey D.; Teshima, Christopher W.;
Endoscopic pressure study integrated system reflects gastroesophageal junction competence in patients with erosive esophagitis and Barrett ' s esophagus DIGESTIVE ENDOSCOPY 2020 Author:Iwaya, Yugo; Inoue, Haruhiro; de Santiago, Enrique Rodriguez; Abad, Mary Raina Angeli; Fujiyoshi, Yusuke; Ueno, Akiko; Tanabe, Mayo; Sumi, Kazuya; Tomida, Hideomi; Ominami, Masaki; Ikeda, Haruo; Onimaru, Manabu; Shimamura, Yuto;
Pedunculated signet ring cell carcinoma of the stomach mimicking a hyperplastic polyp GASTROINTESTINAL ENDOSCOPY,90(5):848-849 2019(Nov.) Author:Mochizuki, Yuichiro; Iwaya, Yugo; Iwaya, Mai; Hirota, Yuko; Inoue, Haruhiro;
Clinical characteristics may distinguish patients with esophageal adenocarcinoma arising from long- versus short-segment Barrett's esophagus DIGESTIVE AND LIVER DISEASE,51(10):1470-1474 2019(Oct.) Author:Iwaya, Yugo; Shimamura, Yuto; Mosko, Jeffrey D.; Kandel, Gabor; Kortan, Paul P.; May, Gary R.; Marcon, Norman E.; Teshima, Christopher W.; Keywords:Clinical characteristics; Hiatus hernia; Smoking; Statin;
UTILIZING THE NOVEL ENDOSCOPIC PRESSURE STUDY INTEGRATED SYSTEM (EPSIS) AND ITS RELATION TO EROSIVE ESOPHAGITIS AND BARRETT'S ESOPHAGUS GASTROINTESTINAL ENDOSCOPY,89(6):AB466-AB466 2019(Jun.) Author:Fujiyoshi, Yusuke; Iwaya, Yugo; Shimamura, Yuto; Sumi, Kazuya; Ikeda, Haruo; Onimaru, Manabu; Inoue, Haruhiro;
RETROGRADE DOUBLE-BALLOON ENTEROSCOPY FOR TREATMENT OF REFRACTORY DISTAL INTESTINAL OBSTRUCTION SYNDROME: DESCRIPTION OF A NOVEL APPLICATION GASTROINTESTINAL ENDOSCOPY,89(6):AB124-AB124 2019(Jun.) Author:Rumman, Amir; Al Ghamdi, Sarah; Iwaya, Yugo; Teshima, Christopher W.; May, Gary R.;
A NEWLY DEVELOPED DIAGNOSTIC TOOL FOR GERD AND NERD: ENDOSCOPIC PRESSURE STUDY INTEGRATED SYSTEM (EPSIS) GASTROINTESTINAL ENDOSCOPY,89(6):AB197-AB197 2019(Jun.) Author:Shimamura, Yuto; Manolakis, Anastassios C.; de Santiago, Enrique Rodriguez; Kobayashi, Yasutoshi; Ominami, Masaki; Fujiyoshi, Yusuke; Fukuda, Hisashi; Tomida, Hideomi; Sumi, Kazuya; Iwaya, Yugo; Ikeda, Haruo; Onimaru, Manabu; Inoue, Haruhiro;
THE EFFICACY OF ANTI-REFLUX MUCOSECTOMY (ARMS): A THREE-YEAR FOLLOW-UP STUDY GASTROINTESTINAL ENDOSCOPY,89(6):AB195-AB195 2019(Jun.) Author:Sumi, Kazuya; Inoue, Haruhiro; Shimamura, Yuto; Iwaya, Yugo; Tomida, Hideomi; Tanabe, Mayo; Fujiyoshi, Yusuke; Ikeda, Haruo; Onimaru, Manabu;
RETROGRADE DOUBLE-BALLOON ENTEROSCOPY FOR TREATMENT OF REFRACTORY DISTAL INTESTINAL OBSTRUCTION SYNDROME: DESCRIPTION OF A NOVEL APPLICATION GASTROINTESTINAL ENDOSCOPY,89(6):AB124-AB124 2019(Jun.) Author:Rumman, Amir; Al Ghamdi, Sarah; Iwaya, Yugo; Teshima, Christopher W.; May, Gary R.;
A NEWLY DEVELOPED DIAGNOSTIC TOOL FOR GERD AND NERD: ENDOSCOPIC PRESSURE STUDY INTEGRATED SYSTEM (EPSIS) GASTROINTESTINAL ENDOSCOPY,89(6):AB197-AB197 2019(Jun.) Author:Shimamura, Yuto; Manolakis, Anastassios C.; de Santiago, Enrique Rodriguez; Kobayashi, Yasutoshi; Ominami, Masaki; Fujiyoshi, Yusuke; Fukuda, Hisashi; Tomida, Hideomi; Sumi, Kazuya; Iwaya, Yugo; Ikeda, Haruo; Onimaru, Manabu; Inoue, Haruhiro;
THE EFFICACY OF ANTI-REFLUX MUCOSECTOMY (ARMS): A THREE-YEAR FOLLOW-UP STUDY GASTROINTESTINAL ENDOSCOPY,89(6):AB195-AB195 2019(Jun.) Author:Sumi, Kazuya; Inoue, Haruhiro; Shimamura, Yuto; Iwaya, Yugo; Tomida, Hideomi; Tanabe, Mayo; Fujiyoshi, Yusuke; Ikeda, Haruo; Onimaru, Manabu;
UTILIZING THE NOVEL ENDOSCOPIC PRESSURE STUDY INTEGRATED SYSTEM (EPSIS) AND ITS RELATION TO EROSIVE ESOPHAGITIS AND BARRETT'S ESOPHAGUS GASTROINTESTINAL ENDOSCOPY,89(6):AB466-AB466 2019(Jun.) Author:Fujiyoshi, Yusuke; Iwaya, Yugo; Shimamura, Yuto; Sumi, Kazuya; Ikeda, Haruo; Onimaru, Manabu; Inoue, Haruhiro;
RETROGRADE DOUBLE-BALLOON ENTEROSCOPY FOR TREATMENT OF REFRACTORY DISTAL INTESTINAL OBSTRUCTION SYNDROME: DESCRIPTION OF A NOVEL APPLICATION GASTROINTESTINAL ENDOSCOPY,89(6):AB124-AB124 2019(Jun.) Author:Rumman, Amir; Al Ghamdi, Sarah; Iwaya, Yugo; Teshima, Christopher W.; May, Gary R.;
A NEWLY DEVELOPED DIAGNOSTIC TOOL FOR GERD AND NERD: ENDOSCOPIC PRESSURE STUDY INTEGRATED SYSTEM (EPSIS) GASTROINTESTINAL ENDOSCOPY,89(6):AB197-AB197 2019(Jun.) Author:Shimamura, Yuto; Manolakis, Anastassios C.; de Santiago, Enrique Rodriguez; Kobayashi, Yasutoshi; Ominami, Masaki; Fujiyoshi, Yusuke; Fukuda, Hisashi; Tomida, Hideomi; Sumi, Kazuya; Iwaya, Yugo; Ikeda, Haruo; Onimaru, Manabu; Inoue, Haruhiro;
THE EFFICACY OF ANTI-REFLUX MUCOSECTOMY (ARMS): A THREE-YEAR FOLLOW-UP STUDY GASTROINTESTINAL ENDOSCOPY,89(6):AB195-AB195 2019(Jun.) Author:Sumi, Kazuya; Inoue, Haruhiro; Shimamura, Yuto; Iwaya, Yugo; Tomida, Hideomi; Tanabe, Mayo; Fujiyoshi, Yusuke; Ikeda, Haruo; Onimaru, Manabu;
HELICOBACTER PYLORI INFECTION AMONG YOUNG PEOPLE AND THEIR CHARACTERISTIC ENDOSCOPIC IMAGES GASTROENTEROLOGY,156(6):S526-S526 2019(May) Author:Uehara, Hiroyuki; Akamatsu, Taiji; Suga, Tomoaki; Nagaya, Tadanobu; Iwaya, Yugo; Okamura, Takuma; Ito, Akihiro; Tanaka, Eiji;
Clinical characteristics may distinguish patients with esophageal adenocarcinoma arising from long- versus short-segment Barrett's esophagus. Dig Liver Dis.,27 2019(May) Author:Iwaya Y, Shimamura Y, Mosko JD, Kandel G, Kortan PP, May GR, Marcon NE, Teshima CW.
A Schwannoma of the Small Bowel CLINICAL GASTROENTEROLOGY AND HEPATOLOGY,17(4):E35-E35 2019(Mar.) Author:Iwaya, Yugo; Streutker, Catherine; Marcon, Norman;
Clinical characteristics of young patients with early Barrett's neoplasia WORLD JOURNAL OF GASTROENTEROLOGY,25(24):3069-3078 2019 Author:Iwaya, Yugo; Shimamura, Yuto; Goda, Kenichi; Rodriguez de Santiago, Enrique; Coneys, John Gerard; Mosko, Jeffrey D.; Kandel, Gabor; Kortan, Paul; May, Gary; Marcon, Norman; Teshima, Christopher;
Hemangiolymphangioma of the small bowel: A rare cause of chronic anemia DIGESTIVE AND LIVER DISEASE,50(11):1248-1248 2018(Nov.) Author:Iwaya, Yugo; Streutker, Catherine J.; Coneys, J. Gerard; Marcon, Norman;
Buried Barrett's Adenocarcinoma Clearly Demonstrated with Acetic Acid Chromoendoscopy AMERICAN JOURNAL OF GASTROENTEROLOGY,113(11):1580-1580 2018(Nov.) Author:Iwaya, Yugo; Rowsell, Corwyn; Gupta, Vikas; Marcon, Norman;
Narrow-band imaging of a gastric carcinoma with lymphoid stroma associated with Epstein-Barr virus GASTROINTESTINAL ENDOSCOPY,88(2):400-401 2018(Aug.) Author:Iwaya, Yugo; Streutker, Catherine J.; Marcon, Norman;
ONGOING GERD SYMPTOMS AND OBESITY ARE POTENTIAL RISK FACTORS FOR BARRETT'S ADENOCARCINOMA AND HIGH-GRADE DYSPLASIA AMONG PATIENTS UNDER 50 YEARS OF AGE GASTROINTESTINAL ENDOSCOPY,87(6):AB275-AB275 2018(Jun.) Author:Iwaya, Yugo; Shimamura, Yuto; Cirocco, Maria; Mosko, Jeffrey D.; Kandel, Gabor; Kortan, Paul P.; May, Gary R.; Marcon, Norman E.; Teshima, Christopher W.;
Endoscopic treatment of Barrett's esophagus: What can we learn from the Western perspective? DIGESTIVE ENDOSCOPY,30(2):182-191 2018(Mar.) Author:Shimamura, Yuto; Iwaya, Yugo; Goda, Kenichi; Teshima, Christopher W.;
Hot avulsion may be effective as salvage treatment for focal Barrett's esophagus remaining after endoscopic therapy for dysplasia or early cancer: a preliminary study ENDOSCOPY,50(1):8-13 2018(Jan.) Author:Aranda-Hernandez, Javier; Shimamura, Yuto; Grin, Andrea; Iwaya, Yugo; Cirocco, Maria; Kandel, Gabor; May, Gary; Kortan, Paul; Raftopoulos, Spiro; Marcon, Norman;
Clinical Predictors of Response to Endoscopic Therapy of Barrett's Related Early Esophageal Adenocarcinoma GASTROINTESTINAL ENDOSCOPY,85(5):AB414-AB415 2017(May) Author:Shimamura, Yuto; Iwaya, Yugo; Teshima, Christopher W.; Akram, Hamzah; Cirocco, Maria; Raftopoulos, Spiro; Mosko, Jeffrey D.; Kandel, Gabor; Kortan, Paul P.; May, Gary R.; Marcon, Norman E.;
CLINICAL CHARACTERISTICS MAY DISTINGUISH PATIENTS WITH ESOPHAGEAL ADENOCARCINOMA ARISING FROM SHORT-VERSUS LONG-SEGMENT BARRETT'S ESOPHAGUS GASTROENTEROLOGY,152(5):S235-S235 2017(Apr.) Author:Iwaya, Yugo; Shimamura, Yuto; Teshima, Christopher W.; Akram, Hamzah; Cirocco, Maria; Raftopoulos, Spiro; Mosko, Jeffrey D.; Kandel, Gabor; Kortan, Paul P.; May, Gary R.; Marcon, Norman E.;
Case of Barrett's adenocarcinoma with marked endoscopic morphological changes in Barrett's esophagus over a long follow-up period of 15 years DIGESTIVE ENDOSCOPY,28(5):607-610 2016(Jul.) Author:Iwaya, Yugo; Yamazaki, Tomoo; Watanabe, Takayuki; Seki, Ayako; Ochi, Yasuhide; Hara, Etsuo; Arakura, Norikazu; Tanaka, Eiji; Hasebe, Osamu;
A Case of Esophageal Hemangioma Successfully Treated by Endoscopic Injection Sclerotherapy 信州医学雑誌,64(2):75-78 2016(Apr. 10) Author:Suga Tomoaki; Okamura Takuma; Iwaya Yugo; Ito Tetsuya; Arakura Norikazu; Umemura Takeji; Tanaka Eiji Keywords:esophagus, hemangioma, therapy, endoscopic injection sclerotherapy
Enhanced Expression of Fibroblast Growth Factor Receptor 3 IIIc Promotes Human Esophageal Carcinoma Cell Proliferation JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY,64(1):7-17 2016(Jan.) Author:Ueno, Nobuhiro; Shimizu, Akio; Kanai, Michiyuki; Iwaya, Yugo; Ueda, Shugo; Nakayama, Jun; Seo, Misuzu Kurokawa;
Screening to Identify and Eradicate Helicobacter pylori Infection in Teenagers in Japan GASTROENTEROLOGY CLINICS OF NORTH AMERICA,44(3):667-+ 2015(Sep.) Author:Akamatsu, Taiji; Okamura, Takuma; Iwaya, Yugo; Suga, Tomoaki;
Screening to Identify and Eradicate Helicobacter pylori Infection in Teenagers in Japan GASTROENTEROLOGY CLINICS OF NORTH AMERICA,44(3):667-+ 2015(Sep.) Author:Akamatsu, Taiji; Okamura, Takuma; Iwaya, Yugo; Suga, Tomoaki;
Principal cells in gastric neoplasia of fundic gland (chief cell predominant) type show characteristics of immature chief cells PATHOLOGY INTERNATIONAL,65(4):202-204 2015(Apr.) Author:Ota, Hiroyoshi; Yamaguchi, Dai; Iwaya, Mai; Kobayashi, Mikiko; Tateiwa, Nobuyuki; Iwaya, Yugo; Momose, Masanobu; Uehara, Takeshi;
Principal cells in gastric neoplasia of fundic gland (chief cell predominant) type show characteristics of immature chief cells PATHOLOGY INTERNATIONAL,65(4):202-204 2015(Apr.) Author:Ota, Hiroyoshi; Yamaguchi, Dai; Iwaya, Mai; Kobayashi, Mikiko; Tateiwa, Nobuyuki; Iwaya, Yugo; Momose, Masanobu; Uehara, Takeshi;
Introduction of an examination and treatment for Helicobacter pylori infection in high school health screening (vol 46, pg 1353, 2011) JOURNAL OF GASTROENTEROLOGY,47(12):1363-1363 2012(Dec.) Author:Akamatsu, Taiji; Ichikawa, Shinya; Okudaira, Sadahide; Yokosawa, Shuichi; Iwaya, Yugo; Suga, Tomoaki; Ota, Hiroyoshi; Tanaka, Eiji;
Reduced Expression of alpha GlcNAc May Predict a Premalignant Potential of Barrett's Esophagus GASTROENTEROLOGY,142(5):S624-S624 2012(May) Author:Iwaya, Yugo; Hasebe, Osamu; Koide, Naohiko; Kitahara, Kei; Suga, Tomoaki; Shinji, Akihiro; Muraki, Takashi; Yokosawa, Shuichi; Yamada, Shigenori; Arakura, Norikazu; Tanaka, Eiji; Nakayama, Jun;
Introduction of an examination and treatment for Helicobacter pylori infection in high school health screening JOURNAL OF GASTROENTEROLOGY,46(12):1353-1360 2011(Dec.) Author:Akamatsu, Taiji; Ichikawa, Shinya; Okudaira, Sadahide; Yokosawa, Shuichi; Iwaya, Yugo; Suga, Tomoaki; Ota, Hiroyoshi; Tanaka, Eiji;
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