1-18 of 18
Akihito Nagahara
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles

Endoscopic and Clinicopathological Features of a Colorectal Mucin-Rich Variant of Traditional Serrated Adenoma

Open Access
Subject Area:
Gastroenterology
Eiji Kamba, Takashi Murakami, Naoki Tsugawa, Yudai Otsuki, Kei Nomura, Yuichiro Kadomatsu, Hirofumi Fukushima, Tsuyoshi Saito, Tomoyoshi Shibuya, Takashi Yao, Akihito Nagahara
Journal: Digestion
Digestion (2025)
https://doi.org/10.1159/000543700
Published Online: 21 February 2025
View articletitled, Endoscopic and Clinicopathological Features of a Colorectal Mucin-Rich Variant of Traditional Serrated Adenoma
Open the PDF for Endoscopic and Clinicopathological Features of a Colorectal Mucin-Rich Variant of Traditional Serrated Adenoma in another window
Journal Articles

Evidence-Based Clinical Guidelines for Chronic Diarrhea 2023

Open Access
Subject Area:
Gastroenterology
Eikichi Ihara, Noriaki Manabe, Hidenori Ohkubo, Naotaka Ogasawara, Haruei Ogino, Kazuki Kakimoto, Motoyori Kanazawa, Hidejiro Kawahara, Chika Kusano, Shiko Kuribayashi, Akinari Sawada, Tomohisa Takagi, Shota Takano, Toshihiko Tomita, Toshihiro Noake, Mariko Hojo, Ryota Hokari, Tatsuhiro Masaoka, Tomohiko Machida, Noboru Misawa, Yoshiyuki Mishima, Hiroshi Yajima, Sayuri Yamamoto, Hiroshi Yamawaki, Tatsuya Abe, Yasumi Araki, Kunio Kasugai, Takeshi Kamiya, Akira Torii, Atsushi Nakajima, Koji Nakada, Shin Fukudo, Yasuhiro Fujiwara, Hiroto Miwa, Hiromi Kataoka, Akihito Nagahara, Kazuhide Higuchi
Journal: Digestion
Digestion (2024) 105 (6): 480–497.
https://doi.org/10.1159/000541121
Published Online: 28 August 2024
View articletitled, Evidence-Based Clinical Guidelines for Chronic Diarrhea 2023
Open the PDF for Evidence-Based Clinical Guidelines for Chronic Diarrhea 2023 in another window
Journal Articles

Evidence-Based Clinical Guidelines for Chronic Constipation 2023

Open Access
Subject Area:
Gastroenterology
Eikichi Ihara, Noriaki Manabe, Hidenori Ohkubo, Naotaka Ogasawara, Haruei Ogino, Kazuki Kakimoto, Motoyori Kanazawa, Hidejiro Kawahara, Chika Kusano, Shiko Kuribayashi, Akinari Sawada, Tomohisa Takagi, Shota Takano, Toshihiko Tomita, Toshihiro Noake, Mariko Hojo, Ryota Hokari, Tatsuhiro Masaoka, Tomohiko Machida, Noboru Misawa, Yoshiyuki Mishima, Hiroshi Yajima, Sayuri Yamamoto, Hiroshi Yamawaki, Tatsuya Abe, Yasumi Araki, Kunio Kasugai, Takeshi Kamiya, Akira Torii, Atsushi Nakajima, Koji Nakada, Shin Fukudo, Yasuhiro Fujiwara, Hiroto Miwa, Hiromi Kataoka, Akihito Nagahara, Kazuhide Higuchi
Journal: Digestion
Digestion (2025) 106 (1): 62–89.
https://doi.org/10.1159/000540912
Published Online: 19 August 2024
View articletitled, Evidence-Based Clinical Guidelines for Chronic Constipation 2023
Open the PDF for Evidence-Based Clinical Guidelines for Chronic Constipation 2023 in another window
Journal Articles

Development and Validation of a Simple and Multifaceted Instrument, Chronic Constipation-Therapeutic Efficacy and Satisfaction Test, for the Clinical Evaluation of Patients with Chronic Constipation

Available to Purchase
Subject Area:
Gastroenterology
Koji Nakada, Akihito Nagahara, Kimio Isshi, Tadayuki Oshima, Seiji Futagami, Yoshimasa Tanaka, Yoshiharu Yamaguchi, Shiko Kuribayashi, Seiji Arihiro, Atsushi Oshio, Noriaki Manabe, the CC-TEST Study Group
Journal: Digestion
Digestion (2024) 105 (5): 359–372.
https://doi.org/10.1159/000539788
Published Online: 13 June 2024
View articletitled, Development and Validation of a Simple and Multifaceted Instrument, Chronic Constipation-Therapeutic Efficacy and Satisfaction Test, for the Clinical Evaluation of Patients with Chronic Constipation
Open the PDF for Development and Validation of a Simple and Multifaceted Instrument, Chronic Constipation-Therapeutic Efficacy and Satisfaction Test, for the Clinical Evaluation of Patients with Chronic Constipation in another window
Journal Articles

Prevalence and Risk Factors of Constipation Symptoms among Patients Undergoing Colonoscopy: A Single-Center Cross-Sectional Study

Open Access
Subject Area:
Gastroenterology
Shiori Komori, Junichi Akiyama, Naoko Tatsuno, Erika Yamada, Atsuko Izumi, Mariko Hamada, Kana Seto, Yuriko Nishiie, Keigo Suzuki, Yuya Hisada, Yuki Otake, Yuka Yanai, Hidetaka Okubo, Kazuhiro Watanabe, Naoki Akazawa, Natsuyo Yamamoto, Yasuo Tanaka, Mikio Yanase, Akiko Saito, Kazuhiko Yamada, Chizu Yokoi, Akihito Nagahara
Journal: Digestion
Digestion (2024) 105 (4): 299–309.
https://doi.org/10.1159/000539366
Published Online: 16 May 2024
View articletitled, Prevalence and Risk Factors of Constipation Symptoms among Patients Undergoing Colonoscopy: A Single-Center Cross-Sectional Study
Open the PDF for Prevalence and Risk Factors of Constipation Symptoms among Patients Undergoing Colonoscopy: A Single-Center Cross-Sectional Study in another window
Journal Articles

A Questionnaire-Based Survey on the Impact of the COVID-19 Pandemic on Gastrointestinal Endoscopy in Asia

Free
Subject Area:
Gastroenterology
Koji Otani, Toshio Watanabe, Akira Higashimori, Hidekazu Suzuki, Takeshi Kamiya, Akiko Shiotani, Mitsushige Sugimoto, Akihito Nagahara, Shin Fukudo, Satoshi Motoya, Satoru Yamaguchi, Qi Zhu, Francis K.L. Chan, Ki-Baik Hahm, Maria Carla Tablante, Varayu Prachayakul, Murdani Abdullah, Tiing Leong Ang, Kazunari Murakami, The International Gastrointestinal Consensus Symposium Study Group
Journal: Digestion
Digestion (2022) 103 (1): 7–21.
https://doi.org/10.1159/000520287
Published Online: 10 November 2021
View articletitled, A Questionnaire-Based Survey on the Impact of the COVID-19 Pandemic on Gastrointestinal Endoscopy in Asia
Open the PDF for A Questionnaire-Based Survey on the Impact of the COVID-19 Pandemic on Gastrointestinal Endoscopy in Asia in another window
Journal Articles

Questionnaire-Based Survey on Epidemiology of Functional Gastrointestinal Disorders and Current Status of Gastrointestinal Motility Testing in Asian Countries

Free
Subject Area:
Gastroenterology
Takeshi Kamiya, Satoshi Osaga, Eiji Kubota, Shin Fukudo, Satoshi Motoya, Kazunari Murakami, Akihito Nagahara, Akiko Shiotani, Mitsushige Sugimoto, Hidekazu Suzuki, Toshio Watanabe, Satoru Yamaguchi, Francis K.L. Chan, Ki-Baik Hahm, Kwong Ming Fock, Qi Zhu, The International Gastroenterology Consensus Symposium Study Group
Journal: Digestion
Digestion (2021) 102 (1): 73–89.
https://doi.org/10.1159/000513292
Published Online: 16 December 2020
View articletitled, Questionnaire-Based Survey on Epidemiology of Functional Gastrointestinal Disorders and Current Status of Gastrointestinal Motility Testing in Asian Countries
Open the PDF for Questionnaire-Based Survey on Epidemiology of Functional Gastrointestinal Disorders and Current Status of Gastrointestinal Motility Testing in Asian Countries in another window
Journal Articles

Clinicopathological and Endoscopic Features of Raspberry-Shaped Gastric Cancer in Helicobacter pylori -Uninfected Patients

Open Access
Subject Area:
Gastroenterology
Noboru Yatagai, Hiroya Ueyama, Muneo Ikemura, Ryota Uchida, Hisanori Utsunomiya, Daiki Abe, Shotaro Oki, Nobuyuki Suzuki, Atsushi Ikeda, Yoichi Akazawa, Hiroyuki Komori, Tsutomu Takeda, Kohei Matsumoto, Kumiko Ueda, Kenshi Matsumoto, Daisuke Asaoka, Mariko Hojo, Sho Tsuyama, Takuo Hayashi, Takashi Yao, Akihito Nagahara
Journal: Digestion
Digestion (2021) 102 (1): 41–48.
https://doi.org/10.1159/000511907
Published Online: 15 December 2020
View articletitled, Clinicopathological and Endoscopic Features of Raspberry-Shaped Gastric Cancer in Helicobacter pylori -Uninfected Patients
Open the PDF for Clinicopathological and Endoscopic Features of Raspberry-Shaped Gastric Cancer in Helicobacter pylori -Uninfected Patients in another window
Journal Articles

Endoscopic and Clinicopathological Features of Superficial Non-Ampullary Duodenal Tumor Based on the Mucin Phenotypes

Open Access
Subject Area:
Gastroenterology
Yoichi Akazawa, Hiroya Ueyama, Sho Tsuyama, Atsushi Ikeda, Noboru Yatagai, Hiroyuki Komori, Tsutomu Takeda, Kohei Matsumoto, Kenshi Matsumoto, Takashi Hashimoto, Natsumi Tomita, Yoshiaki Kajiyama, Motohiko Kato, Takashi Yao, Akihito Nagahara
Journal: Digestion
Digestion (2021) 102 (5): 663–670.
https://doi.org/10.1159/000508040
Published Online: 09 June 2020
View articletitled, Endoscopic and Clinicopathological Features of Superficial Non-Ampullary Duodenal Tumor Based on the Mucin Phenotypes
Open the PDF for Endoscopic and Clinicopathological Features of Superficial Non-Ampullary Duodenal Tumor Based on the Mucin Phenotypes in another window
Journal Articles

Management of Gastroesophageal Reflux Disease in Asian Countries: Results of a Questionnaire Survey

Free
Subject Area:
Gastroenterology
Mariko Hojo, Akihito Nagahara, Ki-Baik Hahm, Ryuichi Iwakiri, Toshio Watanabe, Abdul Aziz Rani, Qi Zhu, Francis K.L. Chan, Jose D. Sollano, Takeshi Kamiya, Satoru Yamaguchi, Satoshi Motoya, Kwong Ming Fock, Shin Fukudo, Udom Kachintorn, Hidekazu Suzuki, Kazunari Murakami, The International Gastroenterology Consensus Symposium Study Group
Journal: Digestion
Digestion (2020) 101 (1): 66–79.
https://doi.org/10.1159/000504749
Published Online: 04 December 2019
View articletitled, Management of Gastroesophageal Reflux Disease in Asian Countries: Results of a Questionnaire Survey
Open the PDF for Management of Gastroesophageal Reflux Disease in Asian Countries: Results of a Questionnaire Survey in another window
Journal Articles

Effectiveness of Cytapheresis for Ulcerative Colitis in Special Situations: Delayed Onset of Optimum Efficacy in Elderly Patients

Available to Purchase
Subject Area:
Gastroenterology
Tomoyoshi Shibuya, Osamu Nomura, Kei Nomura, Koki Okahara, Keiichi Haga, Dai Ishikawa, Naoto Sakamoto, Tatsuo Ogihara, Taro Osada, Akihito Nagahara
Journal: Digestion
Digestion (2020) 101 (1): 46–52.
https://doi.org/10.1159/000504091
Published Online: 13 November 2019
View articletitled, Effectiveness of Cytapheresis for Ulcerative Colitis in Special Situations: Delayed Onset of Optimum Efficacy in Elderly Patients
Open the PDF for Effectiveness of Cytapheresis for Ulcerative Colitis in Special Situations: Delayed Onset of Optimum Efficacy in Elderly Patients in another window
Journal Articles

Linked Color Imaging and the Kyoto Classification of Gastritis: Evaluation of Visibility and Inter-Rater Reliability

Available to Purchase
Subject Area:
Gastroenterology
Tsutomu Takeda, Daisuke Asaoka, Shuko Nojiri, Mayu Nishiyama, Atsushi Ikeda, Noboru Yatagai, Kei Ishizuka, Takahumi Hiromoto, Shoki Okubo, Maiko Suzuki, Akihito Nakajima, Yoichi Nakatsu, Hiroyuki Komori, Yoichi Akazawa, Yuta Nakagawa, Kentaro Izumi, Kohei Matsumoto, Hiroya Ueyama, Hitoshi Sasaki, Yuji Shimada, Kenshi Matsumoto, Taro Osada, Mariko Hojo, Mototsugu Kato, Akihito Nagahara
Journal: Digestion
Digestion (2020) 101 (5): 598–607.
https://doi.org/10.1159/000501534
Published Online: 12 July 2019
View articletitled, Linked Color Imaging and the Kyoto Classification of Gastritis: Evaluation of Visibility and Inter-Rater Reliability
Open the PDF for Linked Color Imaging and the Kyoto Classification of Gastritis: Evaluation of Visibility and Inter-Rater Reliability in another window
Journal Articles

Questionnaire-Based Survey on Management of Ulcerative Colitis-Associated Cancer in East Asian Countries

Free
Subject Area:
Gastroenterology
Satoru Yamaguchi, Kinro Sasaki, Hiroyuki Kato, Shin Fukudo, Ryuichi Iwakiri, Takeshi Kamiya, Satoshi Motoya, Kazunari Murakami, Akihito Nagahara, Hidekazu Suzuki, Toshio Watanabe, Shin’ichi Takahashi, Francis K.L. Chan, Ki-Baik Hahm, Udom Kachintorn, Fock Kwong Ming, Abdul Aziz Rani, Jose D. Sollano, Qi Zhu
Journal: Digestion
Digestion (2019) 99 (1): 86–94.
https://doi.org/10.1159/000494419
Published Online: 14 December 2018
View articletitled, Questionnaire-Based Survey on Management of Ulcerative Colitis-Associated Cancer in East Asian Countries
Open the PDF for Questionnaire-Based Survey on Management of Ulcerative Colitis-Associated Cancer in East Asian Countries in another window
Journal Articles

Usefulness of Demarcation of Differentiated-Type Early Gastric Cancers after Helicobacter pylori Eradication by Magnifying Endoscopy with Narrow-Band Imaging

Available to Purchase
Subject Area:
Gastroenterology
Yoichi Akazawa, Hiroya Ueyama, Takashi Yao, Hiroyuki Komori, Tsutomu Takeda, Kohei Matsumoto, Kenshi Matsumoto, Daisuke Asaoka, Mariko Hojo, Sumio Watanabe, Akihito Nagahara
Journal: Digestion
Digestion (2018) 98 (3): 175–184.
https://doi.org/10.1159/000489167
Published Online: 05 June 2018
View articletitled, Usefulness of Demarcation of Differentiated-Type Early Gastric Cancers after Helicobacter pylori Eradication by Magnifying Endoscopy with Narrow-Band Imaging
Open the PDF for Usefulness of Demarcation of Differentiated-Type Early Gastric Cancers after Helicobacter pylori Eradication by Magnifying Endoscopy with Narrow-Band Imaging in another window
Journal Articles

Questionnaire-Based Survey on Gastrointestinal Bleeding and Management of Antithrombotic Agents during Endoscopy Among Asian Countries

Free
Subject Area:
Gastroenterology
Nanae Tsuruoka, Ryuichi Iwakiri, Yasuhisa Sakata, Kazuma Fujimoto, Takeshi Kamiya, Takashi Joh, Kengo Tokunaga, Shin’ichi Takahashi, Yoshikazu Kinoshita, Kazuhiko Uchiyama, Yuji Naito, Akihito Nagahara, Toshio Watanabe, Francis K. L. Chan, Ki-Baik Hahm, Udom Kachintorn, Kwong Ming Fock, Ari Fahrial Syam, Abdul Aziz Rani, Jose D. Sollano, Qi Zhu
Journal: Digestion
Digestion (2018) 97 (1): 97–106.
https://doi.org/10.1159/000484228
Published Online: 02 February 2018
View articletitled, Questionnaire-Based Survey on Gastrointestinal Bleeding and Management of Antithrombotic Agents during Endoscopy Among Asian Countries
Open the PDF for Questionnaire-Based Survey on Gastrointestinal Bleeding and Management of Antithrombotic Agents during Endoscopy Among Asian Countries in another window
Journal Articles

Improved Visibility of Barrett’s Esophagus with Linked Color Imaging: Inter- and Intra-Rater Reliability and Quantitative Analysis

Available to Purchase
Subject Area:
Gastroenterology
Tsutomu Takeda, Akihito Nagahara, Kei Ishizuka, Shoki Okubo, Keiichi Haga, Maiko Suzuki, Akihito Nakajima, Hiroyuki Komori, Yoichi Akazawa, Kentaro Izumi, Kohei Matsumoto, Hiroya Ueyama, Yuji Shimada, Kenshi Matsumoto, Daisuke Asaoka, Tomoyoshi Shibuya, Naoto Sakamoto, Taro Osada, Mariko Hojo, Shuko Nojiri, Sumio Watanabe
Journal: Digestion
Digestion (2018) 97 (2): 183–194.
https://doi.org/10.1159/000485459
Published Online: 10 January 2018
View articletitled, Improved Visibility of Barrett’s Esophagus with Linked Color Imaging: Inter- and Intra-Rater Reliability and Quantitative Analysis
Open the PDF for Improved Visibility of Barrett’s Esophagus with Linked Color Imaging: Inter- and Intra-Rater Reliability and Quantitative Analysis in another window
Journal Articles

A Randomized, Double-Blind, Pilot Study of the Effect of Famotidine on Acotiamide Treatment for Functional Dyspepsia

Open Access
Subject Area:
Gastroenterology
Mariko Hojo, Akihito Nagahara, Daisuke Asaoka, Tsutomu Takeda, Kentaro Izumi, Kohei Matsumoto, Hiroya Ueyama, Yuji Shimada, Kenshi Matsumoto, Shuko Nojiri, Sumio Watanabe
Journal: Digestion
Digestion (2017) 96 (1): 5–12.
https://doi.org/10.1159/000477345
Published Online: 13 June 2017
View articletitled, A Randomized, Double-Blind, Pilot Study of the Effect of Famotidine on Acotiamide Treatment for Functional Dyspepsia
Open the PDF for A Randomized, Double-Blind, Pilot Study of the Effect of Famotidine on Acotiamide Treatment for Functional Dyspepsia in another window
Journal Articles

Ten-Year Trend of the Cumulative Helicobacter pylori Eradication Rate for the ‘Japanese Eradication Strategy'

Available to Purchase
Subject Area:
Gastroenterology
Hitoshi Sasaki, Akihito Nagahara, Mariko Hojo, Daisuke Asaoka, Kenshi Matsumoto, Taro Osada, Sumio Watanabe
Journal: Digestion
Digestion (2013) 88 (4): 272–278.
https://doi.org/10.1159/000353313
Published Online: 12 December 2013
View articletitled, Ten-Year Trend of the Cumulative Helicobacter pylori Eradication Rate for the ‘Japanese Eradication Strategy'
Open the PDF for Ten-Year Trend of the Cumulative Helicobacter pylori Eradication Rate for the ‘Japanese Eradication Strategy' in another window