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Iwamuro, Masaya

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Two Cases of Esophageal Mucosal Damage Observed after Peroral Endoscopic Myotomy for Esophageal Motility Disorders
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Author Hirata, Shoichiro| Kamio, Tomohiro| Satomi, Takuya| Hamada, Kenta| Sakae, Hiroyuki| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Manabe, Noriaki| Otsuka, Motoyuki|
Keywords esophagogastroduodenoscopy hypercontractile esophagus jackhammer esophagus peroral endoscopic myotomy
Published Date 2025-10-15
Publication Title Internal Medicine
Volume volume64
Issue issue20
Publisher Japanese Society of Internal Medicine
Start Page 2979
End Page 2984
ISSN 0918-2918
NCID AA10827774
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2025 by The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 40189292
DOI 10.2169/internalmedicine.4943-24
Web of Science KeyUT 001461462400001
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.4943-24
Prognostic Impact of Gastrointestinal Immune-Related Adverse Events Depends on Nutritional Status in Cancer Patients Treated with Immune Checkpoint Inhibitors
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Author Hirata, Shoichiro| Kono, Yoshiyasu| Tanaka, Emi| Sue, Masahiko| Takeuchi, Yasuto| Yoshikawa, Tomoki| Maki, Yoshie| Kamio, Tomohiro| Kametaka, Daisuke| Matsueda, Katsunori| Sakaguchi, Chihiro| Hamada, Kenta| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Otsuka, Motoyuki|
Keywords gastrointestinal immune-related adverse events immune checkpoint inhibitors prognostic nutrition index
Published Date 2025-08-12
Publication Title Cancers
Volume volume17
Issue issue16
Publisher MDPI AG
Start Page 2634
ISSN 2072-6694
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2025 by the authors.
File Version publisher
PubMed ID 40867263
DOI 10.3390/cancers17162634
Web of Science KeyUT 001559601300001
Related Url isVersionOf https://doi.org/10.3390/cancers17162634
Long‐term outcomes of endoscopic resection of superficial esophageal squamous cell carcinoma in late‐elderly patients
FullText URL fulltext.pdf suppl.docx
Author Matsueda, Katsunori| Kawano, Seiji| Fukui, Keisuke| Hirata, Shoichiro| Satomi, Takuya| Inoo, Shoko| Hamada, Kenta| Kono, Yoshiyasu| Iwamuro, Masaya| Kawahara, Yoshiro| Otsuka, Motoyuki|
Keywords endoscopic resection esophageal cancer late-elderly patient long-term outcome
Published Date 2024-10-14
Publication Title Journal of Gastroenterology and Hepatology
Volume volume39
Issue issue12
Publisher Wiley
Start Page 2664
End Page 2671
ISSN 0815-9319
NCID AA10727383
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2024 The Author(s).
File Version publisher
PubMed ID 39402867
DOI 10.1111/jgh.16764
Web of Science KeyUT 001336647500001
Related Url isVersionOf https://doi.org/10.1111/jgh.16764
Gastric Mucosa-associated Lymphoid Tissue Lymphoma That Relapsed after 11 Years Subsequent to Achieving Complete Remission
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Author Inoo, Shoko| Iwamuro, Masaya| Tanaka, Takehiro| Kawahara, Yoshiro| Ootuka, Motoyuki|
Keywords gastric MALT lymphoma H. pylori relapse
Published Date 2024-06-15
Publication Title Internal Medicine
Volume volume63
Issue issue12
Publisher Japanese Society of Internal Medicine
Start Page 1697
End Page 1702
ISSN 0918-2918
NCID AA10827774
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2024 by The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 37926540
DOI 10.2169/internalmedicine.2642-23
CRID 1390582008203472512
Web of Science KeyUT 001274076200004
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.2642-23
Idiopathic Gastric Antral Ulcers
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Tanaka, Takehiro| Kawano, Seiji| Kawahara, Yoshiro| Otsuka, Motoyuki|
Keywords esophagogastroduodenoscopy gastric ulcer diopathic ulcer Helicobacter pylori
Published Date 2025-05-15
Publication Title Internal Medicine
Volume volume63
Issue issue10
Publisher Japanese Society of Internal Medicine
Start Page 1367
End Page 1371
ISSN 0918-2918
NCID AA10827774
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2024 by The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 37813610
DOI 10.2169/internalmedicine.2554-23
CRID 1390581766246831744
Web of Science KeyUT 001227083700001
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.2554-23
A study on the timing of small-bowel capsule endoscopy and its impact on the detection rate of bleeding sources
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Author Kametaka, Daisuke| Iwamuro, Masaya| Inokuchi, Toshihiro| Kawano, Seiji| Hiraoka, Sakiko| Otsuka, Motoyuki|
Keywords Diagnostic yield Obscure Gastrointestinal bleeding Retrospective study Small-bowel capsule endoscopy Timing of endoscopy Vascular lesions
Published Date 2025-06-05
Publication Title BMC Gastroenterology
Volume volume25
Issue issue1
Publisher Springer Science and Business Media LLC
Start Page 434
ISSN 1471-230X
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2025.
File Version publisher
PubMed ID 40474062
DOI 10.1186/s12876-025-04044-1
Web of Science KeyUT 001503671800003
Related Url isVersionOf https://doi.org/10.1186/s12876-025-04044-1
Distinct age-related effects of homologous recombination deficiency on genomic profiling and treatment efficacy in gastric cancer
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Author Maki, Yoshie| Kono, Yoshiyasu| Ozato, Toshiki| Yamamoto, Hideki| Hirasawa, Akira| Ennishi, Daisuke| Tomida, Shuta| Toyooka, Shinichi| Hamada, Kenta| Iwamuro, Masaya| Kawano, Seiji| Otsuka, Motoyuki|
Keywords Homologous recombination repair gene Early-onset gastric cancer Comprehensive genomic profiling
Note The version of record of this article, first published in Journal of Gastroenterology, is available online at Publisher’s website: http://dx.doi.org/10.1007/s00535-025-02267-3|
Published Date 2025-06-13
Publication Title Journal of Gastroenterology
Publisher Springer Science and Business Media LLC
ISSN 0944-1174
NCID AA10988015
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2025
File Version publisher
PubMed ID 40514520
DOI 10.1007/s00535-025-02267-3
Web of Science KeyUT 001507782700001
Related Url isVersionOf https://doi.org/10.1007/s00535-025-02267-3
Characteristics of Early Gastric Cancer in a Patient with a History of Helicobacter pylori Infection and No History of Eradication Therapy
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Author Kuraoka, Sakiko| Kawano, Seiji| Ino, Shoko| Satomi, Takuya| Hamada, Kenta| Kono, Yoshiyasu| Iwamuro, Masaya| Kawahara, Yoshiro| Tanaka, Takehiro| Okada, Hiroyuki| Otsuka, Motoyuki|
Keywords autoimmune gastritis eradication gastric cancer Helicobacter pylori
Published Date 2025-02-01
Publication Title Internal Medicine
Volume volume64
Issue issue3
Publisher Japanese Society of Internal Medicine
Start Page 343
End Page 350
ISSN 0918-2918
NCID AA10827774
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders Ⓒ 2025 The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 38960692
DOI 10.2169/internalmedicine.3617-24
Web of Science KeyUT 001470394600003
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.3617-24
Frequency and Characteristics of Gastrointestinal Diseases in Patients With Neurofibromatosis
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Author Honda, Manami| Iwamuro, Masaya| Tanaka, Takehiro| Yamasaki, Yasushi| Kawano, Seiji| Hiraoka, Sakiko| Kawahara, Yoshiro| Otsuka, Motoyuki|
Keywords colonoscopy esophagogastroduodenoscopy gastrointestinal neoplasms gastrointestinal stromal tumor neurofibromatosis
Published Date 2025-04-16
Publication Title JGH Open
Volume volume9
Issue issue4
Publisher Wiley
Start Page e70151
ISSN 2397-9070
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2025 The Author(s).
File Version publisher
PubMed ID 40247846
DOI 10.1002/jgh3.70151
Web of Science KeyUT 001468535400001
Related Url isVersionOf https://doi.org/10.1002/jgh3.70151
Natural Course and Long-Term Outcomes of Gastric Subepithelial Lesions: A Systematic Review
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Author Iwamuro, Masaya| Okada, Hiroyuki| Otsuka, Motoyuki|
Keywords esophagogastroduodenoscopy gastric lesions gastrointestinal stromal tumor subepithelial lesion submucosal tumor
Published Date 2025-02-07
Publication Title Journal of Clinical Medicine
Volume volume14
Issue issue4
Publisher MDPI
Start Page 1055
ISSN 2077-0383
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2025 by the authors.
File Version publisher
PubMed ID 40004584
DOI 10.3390/jcm14041055
Web of Science KeyUT 001430791000001
Related Url isVersionOf https://doi.org/10.3390/jcm14041055
Endoscopic and Histological Gastritis in University Students with Helicobacter pylori Infection
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Author Okanoue, Shotaro| Sakae, Hiroyuki| Yokota, Kenji| Tanaka, Takehiro| Obayashi, Yuka| Abe, Makoto| Kono, Yoshiyasu| Kanzaki, Hiromitsu| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Yanai, Hiroyuki| Okada, Hiroyuki|
Keywords atrophic gastritis gastric cancer Helicobacter pylori young adults eradication
Published Date 2024-11-01
Publication Title Internal Medicine
Volume volume63
Issue issue21
Publisher Japanese Society of Internal Medicine
Start Page 2875
End Page 2884
ISSN 0918-2918
NCID AA10827774
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders Ⓒ 2024 The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 38432971
DOI 10.2169/internalmedicine.1851-23
Web of Science KeyUT 001361033600001
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.1851-23
Differences in color between early gastric cancer and cancer-suspected non-cancerous mucosa on linked color imaging
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Author Kanzaki, Hiromitsu| Kawahara, Yoshiro| Satomi, Takuya| Okanoue, Shotaro| Hamada, Kenta| Kono, Yoshiyasu| Iwamuro, Masaya| Kawano, Seiji| Okada, Hiroyuki|
Published Date 2022-11-29
Publication Title Endoscopy International Open
Volume volume11
Issue issue01
Publisher Georg Thieme Verlag KG
Start Page E90
End Page E96
ISSN 2364-3722
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2022. The Author(s).
File Version publisher
PubMed ID 36686031
DOI 10.1055/a-1989-6643
Web of Science KeyUT 000920677700005
Related Url isVersionOf https://doi.org/10.1055/a-1989-6643
Degree of pharyngeal deformation caused by pharyngeal endoscopic submucosal dissection is associated with the incidence of aspiration pneumonia
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Author Abe, Makoto| Kawahara, Yoshiro| Obayashi, Yuka| Baba, Yuki| Hamada, Kenta| Sakae, Hiroyuki| Kono, Yoshiyasu| Kanzaki, Hiromitu| Iwamuro, Masaya| Kawano, Seiji| Makino, Takuma| Noda, Yohei| Marunaka, Hidenori| Okada, Hiroyuki|
Published Date 2023-02-13
Publication Title Endoscopy International Open
Volume volume11
Issue issue04
Publisher Georg Thieme Verlag KG
Start Page E351
End Page E357
ISSN 2364-3722
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2023. The Author(s).
File Version publisher
PubMed ID 37077660
DOI 10.1055/a-2033-9707
Web of Science KeyUT 000974137100003
Related Url isVersionOf https://doi.org/10.1055/a-2033-9707
Clinical Significance of Prior Ramucirumab Use on the Effectiveness of Nivolumab as the Third-Line Regimen in Gastric Cancer: A Multicenter Retrospective Study
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Author Obayashi, Yuka| Hirata, Shoichiro| Kono, Yoshiyasu| Abe, Makoto| Miyahara, Koji| Nakagawa, Masahiro| Ishida, Michihiro| Choda, Yasuhiro| Hamada, Kenta| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Otsuka, Motoyuki|
Note The version of record of this article, first published in Drugs - Real World Outcomes, is available online at Publisher’s website: http://dx.doi.org/10.1007/s40801-024-00460-z|
Published Date 2024-10-19
Publication Title Drugs - Real World Outcomes
Volume volume11
Issue issue4
Publisher Springer Nature
Start Page 557
End Page 564
ISSN 2199-1154
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2024
File Version publisher
PubMed ID 39425893
DOI 10.1007/s40801-024-00460-z
Web of Science KeyUT 001337505400001
Related Url isVersionOf https://doi.org/10.1007/s40801-024-00460-z
Rates and risk factors of bleeding after gastric endoscopic submucosal dissection with continuous warfarin or 1‐day withdrawal of direct oral anticoagulants
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Author Hirata, Shoichiro| Hamada, Kenta| Iwamuro, Masaya| Mouri, Hirokazu| Miyahara, Koji| Tsuzuki, Takao| Yamauchi, Kenji| Kobayashi, Sayo| Takahashi, Sakuma| Takenaka, Ryuta| Hori, Shinichiro| Inoue, Masafumi| Toyokawa, Tatsuya| Nishimura, Mamoru| Ishiyama, Shuhei| Miyaike, Jiro| Kato, Ryo| Matsubara, Minoru| Yunoki, Naoko| Kanzaki, Hiromitsu| Kawahara, Yoshiro| Okada, Hiroyuki| Ishikawa, Hideki| Otsuka, Motoyuki| Okayama Gut Study Group|
Keywords direct oral anticoagulants endoscopic submucosal dissection gastric cancer postprocedural bleeding warfarin
Published Date 2024-10-03
Publication Title Journal of Gastroenterology and Hepatology
Volume volume39
Issue issue12
Publisher Wiley
Start Page 2760
End Page 2766
ISSN 0815-9319
NCID AA10727383
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © 2024 The Author(s).
File Version publisher
PubMed ID 39363400
DOI 10.1111/jgh.16757
Web of Science KeyUT 001328472100001
Related Url isVersionOf https://doi.org/10.1111/jgh.16757
インフリキシマブが著効した免疫関連有害事象大腸炎の１例
Title Alternative A case of immune checkpoint inhibitor-associated colitis treated with infliximab
Author Iwamuro, Masaya| Hiraoka, Sakiko| Otsuka, Motoyuki|
Abstract 　A 52-year-old Japanese man diagnosed with non-small cell lung cancer initiated chemotherapy with tremelimumab, durvalumab, nanoparticle albumin-bound paclitaxel, and carboplatin. On the fourth day of the first treatment course, he developed a fever, followed by watery diarrhea exceeding 10 episodes per day and bloody stools the next day. Immunotherapy-related adverse event colitis was diagnosed through CT scans and colonoscopy examinations. Despite the ineffectiveness of systemic steroid administration, prompt alleviation of symptoms was achieved through the administration of infliximab. In our case, the patient developed Grade 3 diarrhea, prompting the initiation of intravenous prednisolone at 80mg/day in accordance with guidelines. However, symptom improvement was not attained. In situations where symptoms persist beyond three days despite systemic steroid administration, the consideration of adjunctive infliximab use at a dosage of 5mg/kg becomes necessary.
Keywords インフリキシマブ（infliximab） 免疫関連有害事象（immune-related adverse events） 大腸炎（colitis）
Publication Title Journal of Okayama Medical Association
Published Date 2024-08-01
Volume volume136
Issue issue2
Start Page 69
End Page 73
ISSN 0030-1558
Related Url isVersionOf https://doi.org/10.4044/joma.136.69
language Japanese
Copyright Holders Copyright (c) 2024 岡山医学会
File Version publisher
DOI 10.4044/joma.136.69
A case of membranous nephropathy complicated by Cronkhite–Canada syndrome successfully treated with mizoribine
FullText URL fulltext20240716-04.pdf fig20240716-04.pdf
Author Nakanoh, Hiroyuki| Tsuji, Kenji| Morimoto, Shiho| Fukushima, Kazuhiko| Iwamuro, Masaya| Uchida, Haruhito A.| Wada, Jun|
Keywords Cronkhite–Canada syndrome Membranous nephropathy Nephrotic syndrome Mizoribine
Note This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s13730-024-00908-9| This fulltext file will be available in Jul. 2025.|
Published Date 2024-07-02
Publication Title CEN Case Reports
Volume volume14
Issue issue1
Publisher Springer Science and Business Media LLC
Start Page 72
End Page 80
ISSN 2192-4449
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s), under exclusive licence to Japanese Society of Nephrology 2024
File Version author
PubMed ID 38954395
DOI 10.1007/s13730-024-00908-9
Web of Science KeyUT 001261218500001
Related Url isVersionOf https://doi.org/10.1007/s13730-024-00908-9
Drug-induced mucosal alterations observed during esophagogastroduodenoscopy
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Author Iwamuro, Masaya| Kawano, Seiji| Otsuka, Motoyuki|
Keywords Diagnosis Esophagogastroduodenoscopy Non-neoplastic lesions Esophageal lesions Gastric lesions Duodenal lesions
Published Date 2024-04-28
Publication Title World Journal of Gastroenterology
Volume volume30
Issue issue16
Publisher Baishideng Publishing Group
Start Page 2220
End Page 2232
ISSN 1007-9327
NCID AA11690631
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2024.
File Version publisher
PubMed ID 38690017
DOI 10.3748/wjg.v30.i16.2220
Web of Science KeyUT 001214282500009
Related Url isVersionOf https://doi.org/10.3748/wjg.v30.i16.2220
Endoscopic manifestation of intestinal transplant-associated microangiopathy after stem cell transplantation
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Ennishi, Daisuke| Fujii, Nobuharu| Matsuoka, Ken-Ichi| Tanaka, Takehiro| Inokuchi, Toshihiro| Hiraoka, Sakiko| Otsuka, Motoyuki|
Keywords Colonoscopy Esophagogastroduodenoscopy Graft-versus-host disease Hematopoietic stem cell transplantation Intestinal transplant-associated microangiopathy iTAM
Note The version of record of this article, first published in BMC Gastroenterology, is available online at Publisher’s website: http://dx.doi.org/10.1186/s12876-024-03221-y|
Published Date 2024-04-22
Publication Title BMC Gastroenterology
Volume volume24
Issue issue1
Publisher BMC
Start Page 140
ISSN 1471-230X
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2024.
File Version publisher
PubMed ID 38649868
DOI 10.1186/s12876-024-03221-y
Web of Science KeyUT 001206319800003
Related Url isVersionOf https://doi.org/10.1186/s12876-024-03221-y
Diagnostic accuracy of frozen section biopsy for early gastric cancer extent during endoscopic submucosal dissection: a prospective study
FullText URL fulltext.pdf
Author Kobashi, Mayu| Ishikawa, Shigenao| Inaba, Tomoki| Iwamuro, Masaya| Aoyama, Yuki| Kagawa, Tomo| Takeuchi, Yasuto| Ando, Midori| Nakamura, Satoko| Okada, Hiroyuki|
Keywords Frozen section Pathological diagnosis Diagnostic accuracy Early gastric cancer Endoscopic submucosal dissection Lateral margin
Note The version of record of this article, first published in Surgical Endoscopy, is available online at Publisher’s website: http://dx.doi.org/10.1007/s00464-023-10100-2|
Published Date 2023-05-22
Publication Title Surgical Endoscopy
Volume volume37
Issue issue9
Publisher Springer Science and Business Media LLC
Start Page 6736
End Page 6748
ISSN 0930-2794
NCID AA10750363
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2023
File Version publisher
PubMed ID 37217685
DOI 10.1007/s00464-023-10100-2
Web of Science KeyUT 000993678400007
Related Url isVersionOf https://doi.org/10.1007/s00464-023-10100-2
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