FullText URL fulltext.pdf
Author Kanzaki, Hiromitsu| Matsueda, Kazuhiro| Nakagawa, Masahiro| Inaba, Tomoki| Takatani, Masahiro| Takenaka, Ryuta| Yoshioka, Masao| Imagawa, Atsushi| Inoue, Masafumi| Suzuki, Seiyuu| Tomoda, Jun| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Tanaka, Takehiro| Okada, Hiroyuki|
Keywords duodenal neoplasms endoscopic mucosal resection natural history
Published Date 2021-10-01
Publication Title Medicine
Volume volume100
Issue issue39
Publisher Lippincott Williams & Wilkins
Start Page e27382
ISSN 0025-7974
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2021 the Author(s).
File Version publisher
PubMed ID 34596158
DOI 10.1097/MD.0000000000027382
Web of Science KeyUT 000701020600039
Related Url isVersionOf https://doi.org/10.1097/MD.0000000000027382
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Fujii, Nobuharu| Tanaka, Takehiro| Kanzaki, Hiromitsu| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Keywords esophagogastroduodenoscopy squamous metaplasia gastrointestinal lymphoma
Published Date 2021-07-15
Publication Title Internal Medicine
Volume volume60
Issue issue14
Publisher The Japanese Society of Internal Medicine
Start Page 2229
End Page 2234
ISSN 0918-2918
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2021 The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 33612676
DOI 10.2169/internalmedicine.6271-20
Web of Science KeyUT 000674801700010
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.6271-20
FullText URL fulltext.pdf
Author Obayashi, Yuka| Kawano, Seiji| Sakae, Hiroyuki| Abe, Makoto| Kono, Yoshiyasu| Kanzaki, Hiromitsu| Iwamuro, Masaya| Kawahara, Yoshiro| Tanaka, Takehiro| Yanai, Hiroyuki| Okada, Hiroyuki|
Keywords background gastric mucosa gastric cancer inflammation Helicobacter pylori propensity score matching
Published Date 2021-04-01
Publication Title Internal Medicine
Volume volume60
Issue issue7
Publisher Japanese Society of Internal Medicine
Start Page 969
End Page 976
ISSN 0918-2918
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2021 The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 33162475
NAID 130008014372
DOI 10.2169/internalmedicine.5486-20
Web of Science KeyUT 000637009100001
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.5486-20
Author Okamoto, Yuki| Kanzaki, Hiromitsu| Tanaka, Takehiro| Sakae, Hiroyuki| Abe, Makoto| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Keywords gastric adenoma gastric adenoma develop carcinoma metachronous gastric cancer long term follow-up
Note This is the peer-reviewed but unedited manuscript version of the following article: Digestion 2021 (DOI: 10.1159/000515213). The final, published version is available at http://www.karger.com/?doi=10.1159/000515213 <br> This fulltext is available in Apr. 2022|
Published Date 2021-4-9
Publication Title Digestion
Publisher S. Karger AG
ISSN 0012-2823
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2021 S. Karger AG, Basel
PubMed ID 33839721
DOI 10.1159/000515213
Web of Science KeyUT 000640288000001
Related Url isVersionOf https://doi.org/10.1159/000515213
FullText URL fulltext.pdf
Author Satomi, Takuya| Kawano, Seiji| Inaba, Tomoki| Nakagawa, Masahiro| Mouri, Hirokazu| Yoshioka, Masao| Tanaka, Shoichi| Toyokawa, Tatsuya| Kobayashi, Sayo| Tanaka, Takehiro| Kanzaki, Hiromitsu| Iwamuro, Masaya| Kawahara, Yoshiro| Okada, Hiroyuki|
Keywords Endoscopic submucosal dissection Gastric tube Gastric cancer Eso-phagectomy Multicenter study Retrospective study
Published Date 2021-03-21
Publication Title World Journal of Gastroenterology
Volume volume27
Issue issue11
Publisher Baishideng Publishing Group Inc.
Start Page 1043
End Page 1054
ISSN 1007-9327
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version publisher
PubMed ID 33776371
NAID 120007027578
DOI 10.3748/wjg.v27.i11.1043
Web of Science KeyUT 000635258600004
Related Url isVersionOf https://doi.org/10.3748/wjg.v27.i11.1043
FullText URL fulltext.pdf
Author Baba, Yuki| Kawano, Seiji| Kono, Yoshiyasu| Inokuchi, Toshihiro| Kanzaki, Hiromitsu| Iwamuro, Masaya| Harada, Keita| Kawahara, Yoshiro| Okada, Hiroyuki|
Keywords obscure gastrointestinal bleeding overt previous bleeding vascular lesions chronic kidney disease
Published Date 2020-06-01
Publication Title Internal Medicine
Volume volume59
Issue issue11
Publisher The Japanese Society of Internal Medicine
Start Page 1345
End Page 1350
ISSN 1349-7235
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 by The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 32023585
DOI 10.2169/internalmedicine.3628-19
Web of Science KeyUT 000537806600001
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.3628-19
JaLCDOI 10.18926/AMO/61204
FullText URL 74_6_461.pdf
Author Kono, Yoshiyasu| Kanzaki, Hiromitsu| Iwamuro, Masaya| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Abstract Gastric cancer usually arises in middle-aged to older patients, and is rarely found in younger patients. The clin-ical characteristics, etiology, prognosis, preventive methods and treatment of gastric cancer in young patients have not been fully investigated because of its low prevalence. In this review, we discuss the current under-standing and clinical problems associated with gastric cancer in young patients. Helicobacter pylori (H. pylori), which is a major cause of gastric cancer, especially in older populations, is closely associated with gastric cancer in young patients as well as in older patients. Gastric cancer in young patients tends to be diagnosed at an advanced stage with alarm symptoms. However, young patients with advanced gastric cancer tend to have a favorable general condition and organ function, so they can tolerate intensive systematic chemotherapy. Unfortunately, the prognosis of gastric cancer in young patients with an advanced stage is not favorable. We should not take this rare disease lightly, given its poor prognosis if patients are diagnosed at an unresectable stage. The evaluation of the H. pylori infection status and performance of H. pylori eradication therapy to prevent gastric cancer in young patients as well as the development of more intensive chemotherapy regimens for unre-sectable gastric cancer in young patients are warranted.
Keywords gastric cancer young patients Helicobacter pylori
Amo Type Review
Published Date 2020-12
Publication Title Acta Medica Okayama
Volume volume74
Issue issue6
Publisher Okayama University Medical School
Start Page 461
End Page 466
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 33361865
Web of Science KeyUT 000601203600001
NAID 120006948954
FullText URL fulltext.pdf Figures.pdf Supplemental Figures.pdf
Author Matsumoto, Kazuyuki| Kato, Hironari| Kawano, Seiji| Fujiwara, Hiroyasu| Nishida, Kenji| Harada, Ryo| Fujii , Masakuni| Yoshida, Ryuichi| Umeda, Yuzo| Hinotsu, Shiro| Yagi , Takahito| Okada, Hiroyuki|
Keywords ethanol injection EUS‐guided therapy pancreatic neuroendocrine tumor scheduled therapy small size
Note This is the peer reviewed version of the following article: Kazuyuki Matsumoto et. al. Efficacy and safety of scheduled early endoscopic ultrasonography‐guided ethanol reinjection for patients with pancreatic neuroendocrine tumors: Prospective pilot study. Digestive Endoscopy (2020) 32(3), 425-430, which has been published in final form at https://doi.org/10.1111/den.13552|. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.|
Published Date 2020-03
Publication Title Digestive Endoscopy
Volume volume32
Issue issue3
Publisher Wiley
Start Page 425
End Page 430
ISSN 0915-5635
NCID AA10907137
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 31580507
DOI 10.1111/den.13552
Web of Science KeyUT 000494577300001
Related Url isVersionOf https://doi.org/10.1111/den.13552
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Takahashi, Takahide| Tanaka, Takehiro| Toji, Tomohiro| Hiraoka, Sakiko| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Published Date 2020-10-07
Publication Title Case Reports in Gastrointestinal Medicine
Volume volume2020
Publisher Hindawi
Start Page 8893604
ISSN 2090-6528
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 Masaya Iwamuro et al.
File Version publisher
PubMed ID 33083067
DOI 10.1155/2020/8893604
Web of Science KeyUT 000583201400001
Related Url isVersionOf https://doi.org/10.1155/2020/8893604
FullText URL fulltext.pdf Figure_A.tif Figure_B.tif Figure_C.tif Figure_D.tif
Author Ako, Soichiro| Kawano, Seiji| Okada, Hiroyuki|
Published Date 2020-07-23
Publication Title Clinical Gastroenterology and Hepatology
Publisher AGA Institute
ISSN 15423565
NCID AA11845942
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 by the AGA Institute
File Version author
PubMed ID 32712389
DOI 10.1016/j.cgh.2020.07.044
Related Url isVersionOf https://doi.org/10.1016/j.cgh.2020.07.044
JaLCDOI 10.18926/AMO/60363
FullText URL 74_4_265.pdf
Author Inokuchi, Toshihiro| Hiraoka, Sakiko| Yasutomi, Eriko| Oka, Shohei| Yamasaki, Yasushi| Kinugasa, Hideaki| Takahar, Masahiro| Kawano, Seiji| Harada, Keita| Okada, Hiroyuki| Kato, Jun|
Abstract Determining factors that predict a favorable disease course without anti-tumor necrosis factor (TNF) agents would help establish a more cost-effective strategy for Crohn’s disease (CD). A retrospective chart review was performed for CD patients with disease durations > 10 years who had not received anti-TNF agents as first-line therapy. Patients were divided into 2 groups: those who received neither anti-TNF agents nor bowel resection (G1), and those who had received an anti-TNF agent and/or bowel resection (G2). The patient backgrounds, therapies and clinical courses were compared between the groups. A total of 62 CD patients met the inclusion criteria (males: 71%; median duration of follow-up: 19 years). Six patients were included in G1; they were significantly less likely to have upper gastrointestinal lesions than G2 (p=0.007). A multivariate analysis revealed that the significant factors for avoidance of bowel resection without anti-TNF treatment were non-stricturing and non-penetrating behaviors, and absence of upper gastrointestinal lesions at the diagnosis (hazard ratios 0.41 and 0.52; p=0.004 and 0.04, respectively). In consideration of the long treatment course of CD, patients with non-stricturing and non-penetrating behaviors and no upper gastrointestinal lesions should not be treated with anti-TNF agents as first-line therapy.
Keywords Crohn’s disease anti-TNF agent upper gastrointestinal lesion bamboo joint-like appearance
Amo Type Original Article
Published Date 2020-08
Publication Title Acta Medica Okayama
Volume volume74
Issue issue4
Publisher Okayama University Medical School
Start Page 265
End Page 274
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 32843757
Web of Science KeyUT 000562508700001
NAID 120006880202
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Murakami, Toshi| Tanaka, Takehiro| Oka, Shohei| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Published Date 2020-06-04
Publication Title Case Reports in Gastrointestinal Medicine
Volume volume2020
Publisher Hindawi
Start Page 6381670
ISSN 2090-6528
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 Masaya Iwamuro et al.
File Version publisher
PubMed ID 32566328
DOI 10.1155/2020/6381670
Web of Science KeyUT 000542326600001
Related Url isVersionOf https://doi.org/10.1155/2020/6381670
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Takahashi, Takahide| Ota, Yoko| Tanaka, Takehiro| Asada, Noboru| Yano, Shuya| Uka, Mayu| Nakamura, Rei| Baba, Yuki| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Published Date 2020-04-09
Publication Title Case Reports in Gastrointestinal Medicine
Volume volume2020
Publisher Hindawi
Start Page 7947540
ISSN 2090-6528
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 Masaya Iwamuro et al.
File Version publisher
PubMed ID 32328319
DOI 10.1155/2020/7947540
Web of Science KeyUT 000528921300002
Related Url isVersionOf https://doi.org/10.1155/2020/7947540
FullText URL ecancermedicalscience2019_933.pdf
Author Iwamuro, Masaya| Tanaka, Takehiro| Nishida, Kenji| Kanzaki, Hiromitsu| Kawano, Seiji| Kawahara, Yoshiro| Yoshino, Tadashi| Okada, Hiroyuki|
Keywords follicular gastritis gastric neoplasms gastrointestinal endoscope mucosa-associated lymphoid tissue lymphoma nodular gastritis
Published Date 2019-06-03
Publication Title ecancermedicalscience
Volume volume13
Publisher CANCER INTELLIGENCE
Start Page 933
ISSN 1754-6605
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © the authors
File Version publisher
PubMed ID 31281430
DOI 10.3332/ecancer.2019.933
Web of Science KeyUT 000472729000001
Related Url isVersionOf https://doi.org/10.3332/ecancer.2019.933
JaLCDOI 10.18926/AMO/55436
FullText URL 71_5_391.pdf
Author Iwamuro, Masaya| Takata, Katsuyoshi| Hayashi, Eiko| Kawano, Seiji| Hiraoka, Sakiko| Kawahara, Yoshiro| Yoshino, Tadashi| Okada, Hiroyuki|
Abstract  To evaluate the usefulness of colonoscopy for the detection of ileal involvement in patients with intestinal follicular lymphoma, seventeen patients with intestinal follicular lymphoma who underwent colonoscopy and biopsy sampling from the terminal ileum were enrolled. The patients were divided into 2 groups: cases with ileal involvement (n=6) and cases without ileal involvement (n=11). Patients’ clinical backgrounds were compared between the two groups. Subsequently, 10 board-certified endoscopists independently evaluated the endoscopic pictures and determined whether the ileum was involved with follicular lymphoma. Infiltration of follicular lymphoma cells were identified in 6 patients (35.3%). Cases with positive ileal involvement were diagnosed with follicular lymphoma at a younger age than were cases without ileal involvement (55.4±7.4 vs. 68.1±10.3 years, p=0.011). Macroscopically, in patients with ileal involvement, there were multiple polypoid elevations smaller than 5 mm in 4 cases, single polypoid elevation smaller than 5 mm in 1 case, and single polypoid elevation larger than 5 mm in 1 case. In patients without ileal involvement, there were no lesions in the terminal ileum in 7 cases, and multiple polypoid elevations smaller than 5 mm were seen in 4 cases. The accuracy of the macroscopic evaluation by 10 board-certified endoscopists was 68.8%. Colonoscopy is particularly recommended during the initial workup of patients with follicular lymphoma diagnosed at age ≤ 60 years. The diagnosis of ileal involvement based on morphology alone is difficult; thus, biopsy and pathologic diagnosis are required for accurate diagnosis.
Keywords follicular lymphoma colonoscopy ileal neoplasms terminal ileum small intestine
Amo Type Original Article
Published Date 2017-10
Publication Title Acta Medica Okayama
Volume volume71
Issue issue5
Publisher Okayama University Medical School
Start Page 391
End Page 398
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2017 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 29042696
JaLCDOI 10.18926/AMO/54977
FullText URL 71_2_97.pdf
Author Iwamuro, Masaya| Kondo, Eisei| Tanaka, Takehiro| Hagiya, Hideharu| Kawano, Seiji| Kawahara, Yoshiro| Otsuka, Fumio| Okada, Hiroyuki|
Abstract We retrospectively analyzed the cases of 14 patients (9 women, 5 men, mean age: 51.6 years) with cytomegalovirus (CMV) involvement in the esophagus, stomach, and/or duodenum diagnosed at a single center, to determine their endoscopic features and clinical backgrounds. Thirteen patients (92.9%) had hematologic disease; the other had rheumatoid arthritis. Of the former, 12 patients underwent allogeneic hematopoietic stem cell transplantation, and 9 of these patients had graft-versus-host disease (GVHD) before undergoing esophagogastroduodenoscopy (EGD). All 14 patients had been taking one or more immunosuppressive agents including cyclosporine (n=10), corticosteroids (n=9), mycophenolic acid (n=6), tacrolimus (n=3), and methotrexate (n=1). Tests for CMV antigenemia were positive in 11 patients (78.6%). EGD examinations revealed esophageal (n=3), gastric (n=9), and duodenal involvement (n=6). Macroscopically, esophageal lesions by CMV infection presented as redness (n=1), erosions (n=1), and ulcers (n=1). Gastric lesions manifested as redness (n=7), erosions (n=3), exfoliated mucosa (n=2), and verrucous erosions (n=1). Mucosal appearances in the duodenum varied: redness (n=2), ulcers (n=2), multiple erosions (n=2), single erosion (n=1), edema (n=1). CMV was detected even in the intact duodenal mucosa (n=1). In conclusion, physicians must recall the relevance of CMV infection when any mucosal alterations exist in the upper gastrointestinal tract of immunosuppressed patients.
Keywords cytomegalovirus duodenum esophagogastroduodenoscopy esophagus stomach
Amo Type Original Article
Published Date 2017-04
Publication Title Acta Medica Okayama
Volume volume71
Issue issue2
Publisher Okayama University Medical School
Start Page 97
End Page 104
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2017 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 28420890
JaLCDOI 10.18926/AMO/54810
FullText URL 70_6_469.pdf
Author Yamasaki, Yasushi| Takenaka, Ryuta| Hori, Keisuke| Takemoto, Koji| Kawano, Seiji| Kawahara, Yoshiro| Fujiki, Shigeatsu| Okada , Hiroyuki|
Abstract The usefulness of endoscopy in marginal ulcer bleeding has rarely been studied, and the optimal method for preventing rebleeding is unclear. Here we assessed the efficacy of endoscopy in marginal ulcer bleeding and examined the efficacy of proton pump inhibitors (PPIs) in the prevention of rebleeding. A total of 28 patients with marginal ulcer bleeding (21 men, 7 women; median age 58.5 years) were treated by endoscopy. We analyzed the clinical characteristics, results of endoscopic therapy, characteristics of rebleeding patients, and relation between the use of PPIs and the duration of rebleeding. Sixteen patients had active bleeding. Initial hemostasis was achieved in all patients. There were no procedure-related adverse events. Rebleeding occurred in one patient within the first month and in 7 patients thereafter. There was a significant difference in the rebleeding rate between the patients who received a PPI and those who did not. In a multivariate analysis, the non-use of PPIs was a risk factor for rebleeding (hazard ratio, 6.22). Therapeutic endoscopy is effective in achieving hemostasis from marginal ulcer bleeding. PPIs may prevent rebleeding from marginal ulcers.
Keywords marginal ulcer upper gastrointestinal bleeding endoscopic hemostasis proton-pump inhibitor
Amo Type Original Article
Published Date 2016-12
Publication Title Acta Medica Okayama
Volume volume70
Issue issue6
Publisher Okayama University Medical School
Start Page 469
End Page 475
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2016 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 28003672
Author Gotoda, Tatsuhiro| Kawano, Seiji| Kono, Yoshiyasu| Miura, Kou| Kanzaki, Hiromitsu| Iwamuro, Masaya| Kawahara, Yoshiro| Tanaka, Takehiro| Yoshino, Tadashi| Shirakawad, Yasuhiro| Tabata, Masahiro| Tanimoto, Mitsune| Okada, Hiroyuki|
Published Date 2016-12-01
Publication Title Journal of Okayama Medical Association
Volume volume128
Issue issue3
Content Type Journal Article
Author Iwamuro, Masaya| Okada, Hiroyuki| Harada, Keita| Kanzaki, Hiromitsu| Hori, Keisuke| Kita, Masahide| Kawano, Seiji| Kawahara, Yoshiro| Tanaka, Takehiro| Yamamoto, Kazuhide|
Published Date 2016-12-01
Publication Title Journal of Okayama Medical Association
Volume volume128
Issue issue3
Content Type Journal Article
JaLCDOI 10.18926/AMO/53912
FullText URL 69_6_365.pdf
Author Kawano, Seiji| Hiraoka, Sakiko| Okada, Hiroyuki| Akita, Mitsuhiro| Iwamuro, Masaya| Yamamoto, Kazuhide|
Abstract Several studies have identified a relationship between myelodysplastic syndrome and Behçetʼs disease (BD), especially intestinal BD, and trisomy 8 appears to play an important role in these disorders. Despite this, only few case reports or series have been reported in gastroenterology, meaning that endoscopic findings and characteristics of intestinal BD have not been clarified yet. In this report, we describe three cases of intestinal BD associated with myelodysplastic syndrome and trisomy 8, and discuss the clinical features and problems of these disorders from a gastroenterology perspective.
Keywords Behçetʼs disease trisomy 8 myelodysplastic syndrome
Amo Type Case Reports
Published Date 2015-12
Publication Title Acta Medica Okayama
Volume volume69
Issue issue6
Publisher Okayama University Medical School
Start Page 365
End Page 369
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 26690248
Web of Science KeyUT 000368434500007