Ichimasa Katsuro

Researcher

基本情報

Profile and Settings

• 氏名

  Ichimasa Katsuro

Affiliation

• Gastroenterology, Senior Lecturer

Location

• Northern Yokohama Hospital

Degree

• Doctor of Medical Science, Showa University, Sep. 2016

Research Areas

• Life Science, Gastroenterology

Achievements

Published Papers

• Competing Mortality Redefines the Net Benefit of Additional Surgery After Endoscopic Resection for T1 Colorectal Cancer in Older Adults, Katsuro Ichimasa, Shin-Ei Kudo, Yuta Kouyama, Taishi Okumura, Yasuharu Maeda, Takemasa Hayashi, Khay Guan Yeoh, Hideyuki Miyachi, Masashi Misawa, Dig Endosc, Jul. 2026, Peer-reviewed
• Beyond Curability: Age and Surgical Risk in Individualized Treatment of T1 Colorectal Cancer, Katsuro Ichimasa, Shin-Ei Kudo, Masashi Misawa, Gastroenterology, May 2026, Peer-reviewed
• Optical diagnosis of colorectal neoplasms from an Eastern perspective, Katsuro Ichimasa, Shin-Ei Kudo, Yuta Kouyama, Taishi Okumura, Yasuharu Maeda, Takemasa Hayashi, Kunihiko Wakamura, Khay Guan Yeoh, Tetsuo Nemoto, Masashi Misawa, Best Pract Res Clin Gastroenterol, Feb. 2026, Peer-reviewed
• Artificial Intelligence-Assisted Whole Slide Image Analysis for Lymph Node Status Prediction in Early Colorectal and Gastric Cancer, Katsuro Ichimasa, Shin-Ei Kudo, Yuta Kouyama, Yuki Takashina, Hyunsoo Chung, Yasuharu Maeda, Wai Phyo Lwin, Yosuke Toya, Waku Hatta, Jimmy Bok Yan So, Khay Guan Yeoh, Tetsuo Nemoto, Masashi Misawa, Dig Endosc, Jan. 2026, Peer-reviewed
• Toward precision selection in endoscopic intermuscular dissection for rectal cancer, Katsuro Ichimasa, Shin-Ei Kudo, Masashi Misawa, Endoscopy, Oct. 2025, Peer-reviewed
• Clinical significance of computer-aided quality assessment systems in colonoscopy: a comprehensive review, Wai Phyo Lwin, Katsuro Ichimasa, Shin-Ei Kudo, Yuta Kouyama, Taishi Okumura, Yasuharu Maeda, Yutaro Ide, Khay Guan Yeoh, Masashi Misawa, Clin Endosc, Sep. 2025, Peer-reviewed
• Endoscopic intermuscular dissection for rectal cancer: are we ready to skip surgery?, Katsuro Ichimasa, Shin-Ei Kudo, Masashi Misawa, Gut, Jul. 2025, Peer-reviewed
• 【内視鏡AIの最前線】　人工知能支援下デジタルパソロジー解析による，早期大腸癌の治療戦略, 一政　克朗;工藤　進英;神山　勇太;高階　祐輝;森田　友梨子;椎名　脩;仙波　重則;櫻井　達也;林　武雅;若村　邦彦;澤田　成彦;馬場　俊之;根本　哲生;三澤　将史, 昭和医科大学雑誌, 85(3):199 - 203, Jun. 2025, Peer-reviewed, DOI:https://doi.org/10.14930/jsmu.85.3_199
• 【内視鏡AIの最前線】　内視鏡AIの現状と展望, 三澤　将史;工藤　進英;一政　克朗;前田　康晴;小形　典之;林　武雅;若村　邦彦;馬場　俊之, 昭和医科大学雑誌, 85(3):173 - 180, Jun. 2025, Peer-reviewed, DOI:https://doi.org/10.14930/jsmu.85.3_173
• 【内視鏡AIの最前線】　内視鏡AIの薬事規制について, 三澤　将史;工藤　進英;一政　克朗;前田　康晴;小形　典之;林　武雅;若村　邦彦;馬場　俊之, 昭和医科大学雑誌, 85(3):186 - 192, Jun. 2025, Peer-reviewed, DOI:https://doi.org/10.14930/jsmu.85.3_186
• 【内視鏡AIの最前線】　内視鏡AI：海外の状況, 前田　康晴;工藤　進英;一政　克朗;三澤　将史;小形　典之;林　武雅;若村　邦彦;馬場　俊之, 昭和医科大学雑誌, 85(3):181 - 185, Jun. 2025, Peer-reviewed, DOI:https://doi.org/10.14930/jsmu.85.3_181
• 【内視鏡AIの最前線】　炎症性腸疾患の診断と治療におけるAIの現状, 小形　典之;工藤　進英;一政　克朗;前田　康晴;三澤　将史;林　武雅;若村　邦彦;馬場　俊之, 昭和医科大学雑誌, 85(3):193 - 198, Jun. 2025, Peer-reviewed, DOI:https://doi.org/10.14930/jsmu.85.3_193
• Potential indications for peranal endoscopic myectomy in lower rectal cancer, Katsuro Ichimasa, Shin-Ei Kudo, Takemasa Hayashi, Tatsuya Sakurai, Tetsuo Nemoto, Masashi Misawa, Gastrointest Endosc, Jun. 2025, Peer-reviewed
• Efficacy of a whole slide image-based prediction model for lymph node metastasis in T1 colorectal cancer: A systematic review, Katsuro Ichimasa, Yuta Kouyama, Shin-Ei Kudo, Yuki Takashina, Tetsuo Nemoto, Jun Watanabe, Manabu Takamatsu, Yasuharu Maeda, Khay Guan Yeoh, Hideyuki Miyachi, Masashi Misawa, J Gastroenterol Hepatol, Dec. 2024, Peer-reviewed
• Artificial Intelligence to Predict the Risk of Lymph Node Metastasis in T2 Colorectal Cancer, Katsuro Ichimasa, Caterina Foppa, Shin-Ei Kudo, Masashi Misawa, Yuki Takashina, Hideyuki Miyachi, Fumio Ishida, Tetsuo Nemoto, Jonathan Wei Jie Lee, Khay Guan Yeoh, Elisa Paoluzzi Tomada, Roberta Maselli, Alessandro Repici, Luigi Maria Terracciano, Paola Spaggiari, Yuichi Mori, Cesare Hassan, Antonino Spinelli; early CRC group, Ann Surg, Dec. 2024, Peer-reviewed
• Lymph node metastasis risk factors in T2 colorectal cancer., Morita Yuriko;Kudo Shin-Ei;Takashina Yuki;Ichimasa Katsuro;Kouyama Yuta;Semba Shigenori;Mochizuki Kenichi;Shiina Osamu;Kato Shun;Kuroki Takanori;Shimada Shoji;Nakahara Kenta;Takehara Yusuke;Mukai Shunpei;Ogata Noriyuki;Hayashi Takemasa;Wakamura Kunihiko;Miyachi Hideyuki;Sawada Naruhiko;Nemoto Tetsuo;Baba Toshiyuki;Misawa Masashi, DEN open, 5(1), Nov. 2024, Peer-reviewed, DOI:https://doi.org/10.1002/deo2.70040
• Accuracy Goals in Predicting Preoperative Lymph Node Metastasis for T1 Colorectal Cancer Resected Endoscopically, Katsuro Ichimasa, Shin-Ei Kudo, Masashi Misawa, Khay Guan Yeoh, Tetsuo Nemoto, Yuta Kouyama, Yuki Takashina, Hideyuki Miyachi, Gut Liver, Sep. 2024, Peer-reviewed
• Risk factors for lymph node metastasis in T2 colorectal cancer: a systematic review and meta-analysis, Jun Watanabe, Katsuro Ichimasa, Shin-ei Kudo, Kenichi Mochizuki, Ker-Kan Tan, Yuki Kataoka, Makiko Tahara, Takafumi Kubota, Yuki Takashina, Khay Guan Yeoh, International Journal of Clinical Oncology, Jul. 2024, Peer-reviewed
• Role of the artificial intelligence in the management of T1 colorectal cancer, Katsuro Ichimasa, Shin-ei Kudo, Masashi Misawa, Yuki Takashina, Khay Guan Yeoh, Hideyuki Miyachi, Digestive Liver and Disease, Jul. 2024, Peer-reviewed
• Additional staining for lymphovascular invasion is associated with increased estimation of lymph node metastasis in patients with T1 colorectal cancer: Systematic review and meta-analysis, Jun Watanabe, Katsuro Ichimasa, Yuki Kataoka, Atsushi Miki, Hidehiro Someko, Munenori Honda, Makiko Tahara, Takeshi Yamashina, Khay Guan Yeoh, Shigeo Kawai, Kazuhiko Kotani, Naohiro Sata, Digestive Endoscopy, May 2024, Peer-reviewed
• Challenges in Implementing Endoscopic Resection for T2 Colorectal Cancer, Katsuro Ichimasa, Shin-Ei Kudo, Ker-Kan Tan, Jonathan Wei Jie Lee, Khay Guan Yeoh, Gut and Liver, Mar. 2024, Peer-reviewed
• Diagnostic Accuracy of Highest-Grade or Predominant Histological Differentiation of T1 Colorectal Cancer in Predicting Lymph Node Metastasis: A Systematic Review and Meta-Analysis, Jun Watanabe, Katsuro Ichimasa, Yuki Kataoka, Shoko Miyahara, Atsushi Miki, Khay Guan Yeoh, Shigeo Kawai, Fernando Martínez de Juan, Isidro Machado, Kazuhiko Kotani, Naohiro Sata, Clinical and Translational Gastroenterology, Mar. 2024, Peer-reviewed
• Additional staining for lymphovascular invasion is associated with increased estimation of lymph node metastasis in patients with T1 colorectal cancer: Systematic review and meta-analysis, Jun Watanabe, Katsuro Ichimasa, Yuki Kataoka, Atsushi Miki, Hidehiro Someko, Munenori Honda, Makiko Tahara, Takeshi Yamashina, Khay Guan Yeoh, Shigeo Kawai, Kazuhiko Kotani, Naohiro Sata, Dig Endosc, Mar. 2024, Peer-reviewed
• Commentary: An artificial intelligence prediction model outperforms conventional guidelines in predicting lymph node metastasis of T1 colorectal cancer, Katsuro Ichimasa, Shin-Ei Kudo, Khay Guan Yeoh, Frontiers in Oncololgy, Feb. 2024, Peer-reviewed
• Performance evaluation of a computer-aided polyp detection system with artificial intelligence for colonoscopy, Akiko Chino, Daisuke Ide, Seiichiro Abe, Shigetaka Yoshinaga, Katsuro Ichimasa, Toyoki Kudo, Yuki Ninomiya, Shiro Oka, Shinji Tanaka, Masahiro Igarashi, Digestive Endoscopy, Feb. 2024, Peer-reviewed
• Use of artificial intelligence in the management of T1 colorectal cancer: a new tool in the arsenal or is deep learning out of its depth?, James Weiquan Li, Lai Mun Wang, Katsuro Ichimasa, Kenneth Weicong Lin, James Chi-Yong Ngu, Tiing Leong Ang, Clinical Endoscopy, Jan. 2024, Peer-reviewed
• Artificial intelligence-assisted treatment strategy for T1 colorectal cancer after endoscopic resection, Katsuro Ichimasa, Shin-Ei Kudo, Jonathan Wei Jie Lee, Tetsuo Nemoto, Khay Guan Yeoh, Gastrointestinal Endoscopy, Jun. 2023, Peer-reviewed
• Endoscopic full-thickness resection for complex colorectal lesions - what's the next step?, Katsuro Ichimasa, Shin-Ei Kudo, Calvin Jianyi Koh, Khay Guan Yeoh, Yuichi Mori, Scandinavian Journal of Gastroenterology, Dec. 2022, Peer-reviewed
• Which variable better predicts the risk of lymph node metastasis in T1 colorectal cancer: Highest grade or predominant histological differentiation?, Katsuro Ichimasa, Shin-Ei Kudo, Khay Guan Yeoh, Digestive Endoscopy, Nov. 2022, Peer-reviewed
• "Pathologist-independent" strategy for T1 colorectal cancer after endoscopic resection, Katsuro Ichimasa, Shin-Ei Kudo, Jonathan Wei Jie Lee, Khay Guan Yeoh, Journal of Gastroenterology, Oct. 2022, Peer-reviewed
• Novel "resect and analysis" approach for T2 colorectal cancer with use of artificial intelligence, Katsuro Ichimasa, Kenta Nakahara, Shin-Ei Kudo, Masashi Misawa, Michael Bretthauer, Shoji Shimada, Yusuke Takehara, Shunpei Mukai, Yuta Kouyama, Hideyuki Miyachi, Naruhiko Sawada, Kensaku Mori, Fumio Ishida, Yuichi Mori, Gastrointestinal Endoscopy, Oct. 2022, Peer-reviewed
• Beyond complete endoscopic healing: Goblet appearance using an endocytoscope to predict future sustained clinical remission in ulcerative colitis., Kazumi Takishima; Yasuharu Maeda; Noriyuki Ogata; Masashi Misawa; Yuichi Mori; Mayumi Homma; Tetsuo Nemoto; Yuki Miyata; Yoshika Akimoto; Kentaro Mochida; Yuki Takashina; Kenta Tanaka; Katsuro Ichimasa; Hiroki Nakamura; Seiko Sasanuma; Toyoki Kudo; Takemasa Hayashi; Kunihiko Wakamura; Hideyuki Miyachi; Toshiyuki Baba; Fumio Ishida; Kazuo Ohtsuka; Shin-Ei Kudo, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society, 34(5):1030 - 1039, Jul. 2022
• Deep Submucosal Invasion Is Not an Independent Risk Factor for Lymph Node Metastasis in T1 Colorectal Cancer: A Meta-Analysis, Liselotte W Zwager, Barbara A J Bastiaansen, Nahid S M Montazeri, Roel Hompes, Valeria Barresi, Katsuro Ichimasa, Hiroshi Kawachi, Isidro Machado, Tadahiko Masaki, Weiqi Sheng, Shinji Tanaka, Kazutomo Togashi, Chihiro Yasue, Paul Fockens, Leon M G Moons, Evelien Dekker, Gastroenterology, Jul. 2022, Peer-reviewed
• Artificial intelligence and prediction of the risk of lymph node metastasis of endoscopically removed T1 colorectal cancer., Shin-Ei Kudo; Katsuro Ichimasa; Yuichi Mori, Gastroenterology, 161(2):733 - 734, May 2021
• Artificial Intelligence System to Determine Risk of T1 Colorectal Cancer Metastasis to Lymph Node., Shin-Ei Kudo; Katsuro Ichimasa; Benjamin Villard; Yuichi Mori; Masashi Misawa; Shoichi Saito; Kinichi Hotta; Yutaka Saito; Takahisa Matsuda; Kazutaka Yamada; Toshifumi Mitani; Kazuo Ohtsuka; Akiko Chino; Daisuke Ide; Kenichiro Imai; Yoshihiro Kishida; Keiko Nakamura; Yasumitsu Saiki; Masafumi Tanaka; Shu Hoteya; Satoshi Yamashita; Yusuke Kinugasa; Masayoshi Fukuda; Toyoki Kudo; Hideyuki Miyachi; Fumio Ishida; Hayato Itoh; Masahiro Oda; Kensaku Mori, Gastroenterology, 160(4):1075 - 1084, Mar. 2021
• Current status and future perspective on artificial intelligence for lower endoscopy., Masashi Misawa; Shin-Ei Kudo; Yuichi Mori; Yasuharu Maeda; Yushi Ogawa; Katsuro Ichimasa; Toyoki Kudo; Kunihiko Wakamura; Takemasa Hayashi; Hideyuki Miyachi; Toshiyuki Baba; Fumio Ishida; Hayato Itoh; Masahiro Oda; Kensaku Mori, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society, 33(2):273 - 284, Jan. 2021
• Risk Stratification of T1 Colorectal Cancer Metastasis to Lymph Nodes: Current Status and Perspective., Katsuro Ichimasa; Shin-Ei Kudo; Hideyuki Miyachi; Yuta Kouyama; Masashi Misawa; Yuichi Mori, Gut and liver, 15(6):818 - 826, Dec. 2020
• Endocytoscopic intramucosal capillary network changes and crypt architecture abnormalities can predict relapse in patients with an ulcerative colitis Mayo endoscopic score of 1., MAEDA Yasuharu;KUDO Shin-ei;OGATA Noriyuki;MORI Yuichi;MISAWA Masashi;HOMMA Mayumi;NEMOTO Tetsuo;OGAWA Masataka;SASANUMA Seiko;SATO Yuta;KATAOKA Shinichi;KOUYAMA Yuta;SAKURAI Tatsuya;IGARASHI Kenta;OGAWA Yushi;KATO Kazuki;ICHIMASA Katsuro;NAKAMURA Hiroki;KUDO Toyoki;HAYASHI Takemasa;WAKAMURA Kunihiko;BABA Toshiyuki;INOUE Haruhiro;OHTSUKA Kazuo, Dig Endosc, 32(7):1082 - 1091, Nov. 2020, Peer-reviewed, DOI:10.1111/den.13655
• Left-sided location is a risk factor for lymph node metastasis of T1 colorectal cancer: a single-center retrospective study., Mochizuki Kenichi;Kudo Shin-Ei;Ichimasa Katsuro;Kouyama Yuta;Matsudaira Shingo;Takashina Yuki;Maeda Yasuharu;Ishigaki Tomoyuki;Nakamura Hiroki;Toyoshima Naoya;Mori Yuichi;Misawa Masashi;Ogata Noriyuki;Kudo Toyoki;Hayashi Takemasa;Wakamura Kunihiko;Sawada Naruhiko;Ishida Fumio;Miyachi Hideyuki, International journal of colorectal disease, 35(10):1911 - 1919, Jun. 2020, Peer-reviewed, DOI:10.1007/s00384-020-03668-x
• Endocytoscopy for the differential diagnosis of colorectal low-grade adenoma: a novel possibility for the "resect and discard" strategy., Toyoki Kudo; Kenichi Suzuki; Yuichi Mori; Masashi Misawa; Katsuro Ichimasa; Kenichi Takeda; Hiroki Nakamura; Yasuharu Maeda; Yushi Ogawa; Takemasa Hayashi; Kunihiko Wakamura; Fumio Ishida; Haruhiro Inoue; Shin-Ei Kudo, Gastrointestinal endoscopy, 91(3):676 - 683, Mar. 2020
• Artificial Intelligence-assisted System Improves Endoscopic Identification of Colorectal Neoplasms., Shin-Ei Kudo; Masashi Misawa; Yuichi Mori; Kinichi Hotta; Kazuo Ohtsuka; Hiroaki Ikematsu; Yutaka Saito; Kenichi Takeda; Hiroki Nakamura; Katsuro Ichimasa; Tomoyuki Ishigaki; Naoya Toyoshima; Toyoki Kudo; Takemasa Hayashi; Kunihiko Wakamura; Toshiyuki Baba; Ishida Fumio; Haruhiro Inoue; Hayato Itoh; Masahiro Oda; Kensaku Mori, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 18(8):1874 - 1881, Sep. 2019
• Polyp size classification in colorectal cancer using a Siamese network, ヴィラード ベンジャミン; 伊東 隼人; 小田 昌宏; 森 悠一; 一政 克朗; 三澤 将史; 工藤 進英; 森 健策, 第38回日本医用画像工学会大会予稿集, :OP2-14, Jul. 2019
• Artificial neural network for the prediction of colorectal lymph node metastasis, B. Villard; H. Itoh; K. Ichimasa; Y. Mori; M. Misawa; M. Oda; S. Kudo; K. Mori, International Journal of Computer Assisted Radiology and Surgery CARS 2019, :0, Jun. 2019
• Efficacy and safety of endoscopic submucosal dissection for non-ampullary duodenal polyps: A systematic review and meta-analysis., Watanabe D; Hayashi H; Kataoka Y; Hashimoto T; Ichimasa K; Miyachi H; Tanaka S; Toyonaga T, Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver, 51(6):774 - 781, Jun. 2019
• A Diminutive Invasive Sigmoid Colon Tumor Observed by Endocytoscopy., Okumura Taishi;Kudo Shin-Ei;Ichimasa Katsuro, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 18(9), May 2019, Peer-reviewed
• A Diminutive Invasive Sigmoid Colon Tumor Observed by Endocytoscopy., Okumura Taishi;Kudo Shin-Ei;Ichimasa Katsuro, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 18(9), May 2019, Peer-reviewed
• Clinicopathological features of T1 colorectal carcinomas with skip lymphovascular invasion., Yuta Sato; Shin-Ei Kudo; Katsuro Ichimasa; Shingo Matsudaira; Yuta Kouyama; Kazuki Kato; Toshiyuki Baba; Kunihiko Wakamura; Takemasa Hayashi; Toyoki Kudo; Noriyuki Ogata; Yuichi Mori; Masashi Misawa; Naoya Toyoshima; Tomoyuki Ishigaki; Yusuke Yagawa; Hiroki Nakamura; Tatsuya Sakurai; Yukiko Shakuo; Kenichi Suzuki; Yui Kudo; Shigeharu Hamatani; Fumio Ishida; Hideyuki Miyachi, Oncology letters, 16(6):7264 - 7270, Dec. 2018
• Real-Time Use of Artificial Intelligence in Identification of Diminutive Polyps During Colonoscopy: A Prospective Study., Yuichi Mori; Shin-Ei Kudo; Masashi Misawa; Yutaka Saito; Hiroaki Ikematsu; Kinichi Hotta; Kazuo Ohtsuka; Fumihiko Urushibara; Shinichi Kataoka; Yushi Ogawa; Yasuharu Maeda; Kenichi Takeda; Hiroki Nakamura; Katsuro Ichimasa; Toyoki Kudo; Takemasa Hayashi; Kunihiko Wakamura; Fumio Ishida; Haruhiro Inoue; Hayato Itoh; Masahiro Oda; Kensaku Mori, Annals of internal medicine, 169(6):357 - 366, Sep. 2018
• Risk factors of recurrence in T1 colorectal cancers treated by endoscopic resection alone or surgical resection with lymph node dissection., Yuta Kouyama; Shin-Ei Kudo; Hideyuki Miyachi; Katsuro Ichimasa; Shingo Matsudaira; Masashi Misawa; Yuichi Mori; Toyoki Kudo; Takemasa Hayashi; Kunihiko Wakamura; Fumio Ishida; Shigeharu Hamatani, International journal of colorectal disease, 33(8):1029 - 1038, Aug. 2018
• ARTIFICIAL INTELLIGENCE IS A POWERFUL TOOL TO DETERMINE THE NEED FOR ADDTIONAL SURGERY AFTER ENDOSCOPIC RESECTION OF T1 COLORECTAL CANCER -ANALYSIS BASED ON A BIG DATA FOR MACHINE LEARNING, Ichimasa Katsuro; Kudo Shinei; Mori Yuichi; Misawa Masashi; Matsudaira Shingo; Kouyama Yuta; Baba Toshiyuki; Hidaka Eiji; Wakamura Kunihiko; Hayashi Takemasa; Hisayuki Tomokazu; Kudo Toyoki; Toyoshima Naoya; Ishigaki Tomoyuki; Yagawa Yusuke; Nakamura Hiroki; Takeda Kenichi; Sakurai Tatsuya; Miyachi Hideyuki; Hamatani Shigeharu; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 87(6):AB497, Jun. 2018
• Artificial Intelligence-Assisted Polyp Detection for Colonoscopy: Initial Experience., MISAWA Masashi;KUDO Shin-ei;MORI Yuichi;CHO Tomonari;KATAOKA Shinichi;YAMAUCHi Akihiro;OGAWA Yushi;MAEDA Yasuharu;TAKEDA Kenichi;ICHIMASA Katsuro;NAKAMURA Hiroki;YAGAWA Yusuke;TOYOSHIMA Naoya;OGATA Noriyuki;KUDO Toyoki;HISAYUKI Tomokazu;HAYASHI Takemasa;WAKAMURA Kunihiko;BABA Toshiyuki;ISHIDA Fumio;ITOH Hayato;ROTH Holger;Oda mASAHIRO;MORI Kensaku, Gastroenterology, 154(8):2027 - 2.03E+06, Jun. 2018, Peer-reviewed
• COLORECTAL ENDOCYTOSCOPY BASED MICROVESSELS OBSERVATION IS USEFUL FOR PREDICTING PATHOLOGICAL DIAGNOSIS, Kudo Shinei; Misawa Masashi; Nakamura Hiroki; Kataoka Shinichi; Watanabe Takeshi; Maeda Yasuharu; Matsudaira Shingo; Ichimasa Katsuro; Toyoshima Naoya; Mori Yuichi; Kudo Toyoki; Hisayuki Tomokazu; Ogata Noriyuki; Hayashi Takemasa; Wakamura Kunihiko; Baba Toshiyuki; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 87(6):AB260, Jun. 2018
• STUDIES ON CLINICOPATHOLOGICAL CHARACTERISTICS AND THE LONG-TERM PROGNOSIS DEPRESSED-TYPE COLORECTAL CARCINOMAS, Kurata Tomoyuki; Kudo Shinei; Mori Yuichi; Kudo Toyoki; Ichimasa Katsuro; Wakamura Kunihiko; Hayashi Takemasa; Ishida Fumio; Baba Toshiyuki; Ogawa Yushi; Mochizuki Kenichi; Okumura Taishi; Misawa Masashi; Ogata Noriyuki; Toyoshima Naoya; Hisayuki Tomokazu, GASTROINTESTINAL ENDOSCOPY, 87(6):AB498, Jun. 2018
• 大腸癌外科的切除後のサーベイランス, 中原　健太;石田　文生;一政　克朗;若村　邦彦;日髙　英二;工藤　進英, 臨床消化器内科, 33(8):1001 - 1008, Jun. 2018, Peer-reviewed
• Artificial intelligence may help in predicting the need for additional surgery after endoscopic resection of T1 colorectal cancer., Katsuro Ichimasa; Shin-Ei Kudo; Yuichi Mori; Masashi Misawa; Shingo Matsudaira; Yuta Kouyama; Toshiyuki Baba; Eiji Hidaka; Kunihiko Wakamura; Takemasa Hayashi; Toyoki Kudo; Tomoyuki Ishigaki; Yusuke Yagawa; Hiroki Nakamura; Kenichi Takeda; Amyn Haji; Shigeharu Hamatani; Kensaku Mori; Fumio Ishida; Hideyuki Miyachi, Endoscopy, 50(3):230 - 240, Mar. 2018
• Correction: Artificial intelligence may help in predicting the need for additional surgery after endoscopic resection of T1 colorectal cancer., Ichimasa K; Kudo SE; Mori Y; Misawa M; Matsudaira S; Kouyama Y; Baba T; Hidaka E; Wakamura K; Hayashi T; Kudo T; Ishigaki T; Yagawa Y; Nakamura H; Takeda K; Haji A; Hamatani S; Mori K; Ishida F; Miyachi H, Endoscopy, 50(3):C2, Mar. 2018
• White light-emitting contrast image capsule endoscopy for visualization of small intestine lesions: a pilot study., Noriyuki Ogata; Kazuo Ohtsuka; Seiko Sasanuma; Masataka Ogawa; Yasuharu Maeda; Katsuro Ichimasa; Yuichi Mori; Masashi Misawa; Toyoki Kudo; Tomokazu Hisayuki; Takemasa Hayashi; Kunihiko Wakamura; Hideyuki Miyachi; Toshiyuki Baba; Fumio Ishida; Shin-Ei Kudo, Endoscopy international open, 6(3):E315-E321 - E321, Mar. 2018
• Artificial Intelligence Can Accurately Predict the Presence of Lymph Node Metastasis in Pt1 Colorectal Cancers, Katsuro Ichimasa; Shinei Kudo; Yuichi Mori; Masashi Misawa; Shingo Matsudaira; Yuta Kouyama; Toshiyuki Baba; Atsushi Katagiri; Kunihiko Wakamura; Takemasa Hayashi; Tomokazu Hisayuki; Toyoki Kudo; Hideyuki Miyachi; Shigeharu Hamatani; Eiji Hidaka; Fumio Ishida, GASTROINTESTINAL ENDOSCOPY, 85(5):AB377 - AB377, May 2017
• Clinicopathological Features and Long-Term Prognosis of Depressed-Type Colorectal Carcinomas, Shinei Kudo; Masahiro Abe; Yuta Kouyama; Shingo Matsudaira; Katsuro Ichimasa; Naoya Toyoshima; Seiko Hayashi; Yuichi Mori; Masashi Misawa; Noriyuki Ogata; Toyoki Kudo; Tomokazu Hisayuki; Takemasa Hayashi; Kunihiko Wakamura; Atsushi Katagiri; Eiji Hidaka; Toshiyuki Baba; Hideyuki Miyachi; Shigeharu Hamatani; Fumio Ishida, GASTROINTESTINAL ENDOSCOPY, 85(5):AB389 - AB390, May 2017
• Endoscopic Characteristics of Depressed Type Colorectal Neoplasms in Magnifying Endoscopy and Endocytoscopy, Shinei Kudo; Yohei Ogura; Yuta Kouyama; Shingo Matsudaira; Katsuro Ichimasa; Naoya Toyoshima; Seiko Hayashi; Yuichi Mori; Masashi Misawa; Noriyuki Ogata; Toyoki Kudo; Tomokazu Hisayuki; Takemasa Hayashi; Kunihiko Wakamura; Atsushi Katagiri; Eiji Hidaka; Toshiyuki Baba; Hideyuki Miyachi; Shigeharu Hamatani; Fumio Ishida, GASTROINTESTINAL ENDOSCOPY, 85(5):AB654 - AB654, May 2017
• Patient gender as a factor associated with lymph node metastasis in T1 colorectal cancer: A systematic review and meta-analysis., Katsuro Ichimasa; Shin-Ei Kudo; Hideyuki Miyachi; Yuta Kouyama; Fumio Ishida; Toshiyuki Baba; Atsushi Katagiri; Kunihiko Wakamura; Takemasa Hayashi; Tomokazu Hisayuki; Toyoki Kudo; Masashi Misawa; Yuichi Mori; Shingo Matsudaira; Yui Kimura; Yuki Kataoka, Molecular and clinical oncology, 6(4):517 - 524, Apr. 2017
• 盲腸病変に対するS-O clipの有効性, 石垣 智之; 工藤 進英; 林 武雅; 桜井 達也; 小川 悠史; 矢川 裕介; 中村 大樹; 一政 克郎; 豊嶋 直也; 三澤 将史; 森 悠一; 久行 友和; 片桐 敦; 馬場 俊之; 宮地 英行; 日高 英二; 石田 文生, Gastroenterological Endoscopy, 59(Suppl.1):945 - 945, Apr. 2017
• 盲腸病変に対するS-O clipの有効性, 石垣 智之; 工藤 進英; 林 武雅; 桜井 達也; 小川 悠史; 矢川 裕介; 中村 大樹; 一政 克郎; 豊嶋 直也; 三澤 将史; 森 悠一; 久行 友和; 片桐 敦; 馬場 俊之; 宮地 英行; 日高 英二; 石田 文生, Gastroenterological Endoscopy, 59(Suppl.1):945 - 945, Apr. 2017
• Comparative clinicopathological characteristics of colon and rectal T1 carcinoma, Katsuro Ichimasa; Shin-Ei Kudo; Hideyuki Miyachi; Yuta Kouyama; Takemasa Hayashi; Kunihiko Wakamura; Tomokazu Hisayuki; Toyoki Kudo; Masashi Misawa; Yuichi Mori; Shingo Matsudaira; Eiji Hidaka; Shigeharu Hamatani; Fumio Ishida, ONCOLOGY LETTERS, 13(2):805 - 810, Feb. 2017
• Evaluation of microvascular findings of deeply invasive colorectal cancer by endocytoscopy with narrow-band imaging., Hiroki Nakamura; Shin-Ei Kudo; Masashi Misawa; Shinichi Kataoka; Kunihiko Wakamura; Takemasa Hayashi; Toyoki Kudo; Yuichi Mori; Kenichi Takeda; Katsuro Ichimasa; Hideyuki Miyachi; Atushi Katagiri; Fumio Ishida; Haruhiro Inoue, Endoscopy international open, 4(12):E1280-E1285 - E1285, Dec. 2016
• Morphology as a risk factor for the malignant potential of T2 colorectal cancer., Yuichi Mori; Shin-Ei Kudo; Shungo Endo; Chiyo Maeda; Shumpei Mukai; Yasuharu Maeda; Shinichi Kataoka; Kenichi Takeda; Katsuro Ichimasa; Hideyuki Miyachi; Naruhiko Sawada; Eiji Hidaka; Fumio Ishida, Molecular and clinical oncology, 5(3):223 - 226, Sep. 2016
• Management of T1 colorectal cancers after endoscopic treatment based on the risk stratification of lymph node metastasis, Hideyuki Miyachi; Shin-ei Kudo; Katsuro Ichimasa; Tomokazu Hisayuki; Hiromasa Oikawa; Shingo Matsudaira; Yuta Kouyama; Yui Jennifer Kimura; Masashi Misawa; Yuichi Mori; Noriyuki Ogata; Toyoki Kudo; Kenta Kodama; Takemasa Hayashi; Kunihiko Wakamura; Atsushi Katagiri; Toshiyuki Baba; Eiji Hidaka; Fumio Ishida; Kenichi Kohashi; Shigeharu Hamatani, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 31(6):1126 - 1132, Jun. 2016
• Does Gender Predict Lymph Node Metastasis in pT1 Colorectal Cancer? A Systematic Review and Meta-Analysis, Ichimasa Katsuro; Kudo Shin-ei; Miyachi Hideyuki; Kouyama Yuta; Baba Toshiyuki; Katagiri Atsushi; Wakamura Kunihiko; Hayashi Takemasa; Hisayuki Tomokazu; Kudo Toyoki; Mori Yuichi; Misawa Masashi; Matsudaira Shingo; Kimura Yui J; Ishida Fumio; Kataoka Yuki, GASTROINTESTINAL ENDOSCOPY, 83(5):AB363 - AB364, May 2016
• Factors Associated With Adenoma Detection: Analysis of the Japanese Randomized Controlled Trial, Mori Yuichi; Kudo Shin-ei; Katagiri Atsushi; Misawa Masashi; Toyoshima Naoya; Matsudaira Shingo; Kudo Toyoki; Ogata Noriyuki; Hisayuki Tomokazu; Wakamura Kunihiko; Hayashi Takemasa; Maeda Yasuharu; Fukami Yuichi; Ichimasa Katsuro; Kudo Koki; Nakamura Hiroki; Miyachi Hideyuki; Baba Toshiyuki; Yagawa Yusuke; Kataoka Shinichi; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 83(5):AB229 - AB230, May 2016
• Narrow-Band Imaging Versus White Light for Detection of Diminutive Colorectal Adenoma Using Wide-View and High-Definition Colonoscope (Hq290zi): A Randomized Controlled Trial, Katagiri Atsushi; Kudo Shin-ei; Mori Yuichi; Misawa Masashi; Toyoshima Naoya; Matsudaira Shingo; Kudo Toyoki; Ogata Noriyuki; Hisayuki Tomokazu; Wakamura Kunihiko; Hayashi Takemasa; Maeda Yasuharu; Fukami Yuichi; Ichimasa Katsuro; Kudo Koki; Nakamura Hiroki; Miyachi Hideyuki; Yagawa Yusuke; Kataoka Shinichi; Baba Toshiyuki; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 83(5):AB391, May 2016
• Tthe Growth Pathway and the Pathological Features of Depressed-Type Colorectal Carcinomas, Kudo Shin-ei; Suzuki Kenichi; Miyachi Hideyuki; Kouyama Yuta; Matsudaira Shingo; Ichimasa Katsuro; Oikawa Hiromasa; Mori Yuichi; Misawa Masashi; Kudo Toyoki; Hisayuki Tomokazu; Kodama Kenta; Hayashi Takemasa; Wakamura Kunihiko; Katagiri Atsushi; Baba Toshiyuki; Hidaka Eiji; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 83(5):AB365, May 2016
• Long-Term Outcomes and Prognostic Factors for Recurrence in T1 Colorectal Carcinomas, Kouyama Yuta; Kudo Shin-ei; Miyachi Hideyuki; Matsudaira Shingo; Ichimasa Katsuro; Kimura Yui J; Oikawa Hiromasa; Hisayuki Tomokazu; Wakamura Kunihiko; Hayashi Takemasa; Kudo Toyoki; Mori Yuichi; Misawa Masashi; Katagiri Atsushi; Baba Toshiyuki; Hidaka Eiji; Ishida Fumio, GASTROENTEROLOGY, 150(4):S618, Apr. 2016
• The Prognosis of Colorectal Cancer Patients With Negative Fecal Immunochemical Tests: The Long-Term Follow-Up Study, Wakamura Kunihiko; Kudo Shin-ei; Miyachi Hideyuki; Hayashi Seiko; Maeda Yasuharu; Kouyama Yuta; Ichimasa Katsuro; Toyoshima Naoya; Misawa Masashi; Mori Yuichi; Kudo Toyoki; Hayashi Takemasa; Katagiri Atsushi; Baba Toshiyuki; Ishida Fumio, GASTROENTEROLOGY, 150(4):S754 - S755, Apr. 2016
• Practical problems of measuring depth of submucosal invasion in T1 colorectal carcinomas, Yuta Kouyama; Shin-ei Kudo; Hideyuki Miyachi; Katsuro Ichimasa; Tomokazu Hisayuki; Hiromasa Oikawa; Shingo Matsudaira; Yui J. Kimura; Masashi Misawa; Yuichi Mori; Kenta Kodama; Toyoki Kudo; Takemasa Hayashi; Kunihiko Wakamura; Atsushi Katagiri; Eiji Hidaka; Fumio Ishida; Shigeharu Hamatani, INTERNATIONAL JOURNAL OF COLORECTAL DISEASE, 31(1):137 - 146, Jan. 2016
• 'Head Invasion' Is Not a Metastasis-Free Condition in Pedunculated T1 Colorectal Carcinomas Based on the Precise Histopathological Assessment, Yui Jennifer Kimura; Shin-ei Kudo; Hideyuki Miyachi; Katsuro Ichimasa; Yuta Kouyama; Masashi Misawa; Yuta Sato; Shingo Matsudaira; Hiromasa Oikawa; Tomokazu Hisayuki; Yuichi Mori; Toyoki Kudo; Noriyuki Ogata; Kenta Kodama; Kunihiko Wakamura; Takemasa Hayashi; Atsushi Katagiri; Toshiyuki Baba; Eiji Hidaka; Fumio Ishida; Shigeharu Hamatani, DIGESTION, 94(3):166 - 175, 2016
• Characteristics of colorectal tumours in asymptomatic patients with negative immunochemical faecal occult blood test results., WAKAMURA Kunihiko;KUDO Shin-ei;MIYACHI Hideyuki;KODAMA Kenta;HAYASHI Seiko;MAEDA Yasuharu;OGAWA Yushi;KOUYAMA Yuta;KATAOKA Shin-Ichi;KATO Kazuki;ICHIMASA Katsuro;MISAWA Masashi;MORI Yuichi;KUDO Toyoki;HAYASHI Takemasa;ISHIDA Fumio;OHKOSHI Shogo, Mol Clin Oncol, 3(5):1019 - 1024, Sep. 2015, Peer-reviewed
• A Long-Term Surveillance on the Effect of Additional Surgery With Nodal Dissection for the Prognosis of Patients Suffering T1 Colorectal Carcinomas, Matsudaira Shingo; Kudo Shin-Ei; Miyachi Hideyuki; Kouyama Yuta; Ichimasa Katsuro; Misawa Masashi; Mori Yuichi; Kudo Toyoki; Kodama Kenta; Hayashi Takemasa; Katagiri Atsushi; Hidaka Eiji; Ishida Fumio; Hamatani Shigeharu, GASTROINTESTINAL ENDOSCOPY, 81(5):AB373, May 2015
• Diagnostic Characteristics of Depressed Type Colorectal Neoplasms Examined With Magnifying Chromo-Endoscopy and Endocytoscopy, Kudo Shin-Ei; Kato Kazuki; Ichimasa Katsuro; Miyachi Hideyuki; Kouyama Yuta; Matsudaira Shingo; Oikawa Hiromasa; Hisayuki Tomokazu; Kimura Yui J; Mori Yuichi; Misawa Masashi; Kudo Toyoki; Kodama Kenta; Wakamura Kunihiko; Hayashi Takemasa; Katagiri Atsushi; Hidaka Eiji; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 81(5):AB384, May 2015
• EC3a Nucleus Pattern Classification via Ultra-High Magnifying Endoscopy, Kudo Toyoki; Kudo Shin-Ei; Wakamura Kunihiko; Mori Yuichi; Misawa Masashi; Ichimasa Katsuro; Nakamura Hiroki; Hayashi Takemasa; Miyachi Hideyuki; Ishida Fumio; Inoue Haruhiro, GASTROINTESTINAL ENDOSCOPY, 81(5):AB384, May 2015
• The Diagnostic Ability of Micro Vascular Pattern Observed by Endocytoscopy, Misawa Masashi; Kudo Shin-Ei; Nakamura Hiroki; Kataoka Shinichi; Maeda Yasuharu; Matsudaira Shingo; Ichimasa Katsuro; Hayashi Seiko; Oikawa Hiromasa; Toyoshima Naoya; Mori Yuichi; Ogata Noriyuki; Kudo Toyoki; Kodama Kenta; Hisayuki Tomokazu; Wakamura Kunihiko; Hayashi Takemasa; Katagiri Atsushi; Baba Toshiyuki; Miyachi Hideyuki; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 81(5):AB273, May 2015
• The Efficiency of Self-Expanding Metallic Stents Placement As a Bridge to Surgery for Malignant Colonic Obstruction: a Clinical Result From a Japanese Referral Center, Yagawa Yusuke; Kudo Shin-Ei; Mori Yuichi; Mukai Shunpei; Ishibashi Fumiaki; Igarashi Kenta; Ogawa Yushi; Ichimasa Katsuro; Ishigaki Tomoyuki; Toyoshima Naoya; Misawa Masashi; Kudo Toyoki; Kodama Kenta; Wakamura Kunihiko; Hayashi Takemasa; Miyachi Hideyuki; Hidaka Eiji; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 81(5):AB375 - AB376, May 2015
• The Risk Factor of Lymph Node Metastasis and the Indication for Additional Surgery in T1 Colorectal Carcinomas: a Single Center Retrospective Study, Ichimasa Katsuro; Kudo Shin-Ei; Miyachi Hideyuki; Kouyama Yuta; Kimura Yui J; Matsudaira Shingo; Oikawa Hiromasa; Misawa Masashi; Mori Yuichi; Kudo Toyoki; Kodama Kenta; Hisayuki Tomokazu; Wakamura Kunihiko; Hayashi Takemasa; Katagiri Atsushi; Hamatani Shigeharu; Hidaka Eiji; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 81(5):AB112, May 2015
• the Growth Pathway and the Pathological Features of Depressed-Type Colorectal Carcinomas, Kudo Shin-Ei; Matsudaira Shingo; Miyachi Hideyuki; Kouyama Yuta; Kato Kazuki; Ichimasa Katsuro; Oikawa Hiromasa; Mori Yuichi; Misawa Masashi; Kudo Toyoki; Hisayuki Tomokazu; Hayashi Takemasa; Wakamura Kunihiko; Katagiri Atsushi; Hidaka Eiji; Ishida Fumio, GASTROINTESTINAL ENDOSCOPY, 81(5):AB273, May 2015
• the Management of Pedunculated T1 Colorectal Carcinomas Based on the Risk Factors of Nodal Metastasis; Should WE Really Distinguish 'Head Invasion' and 'Stalk Invasion' or Pedunculated Type and the Others?, Kimura Yui J; Kudo Shin-Ei; Ichimasa Katsuro; Miyachi Hideyuki; Kouyama Yuta; Matsudaira Shingo; Oikawa Hiromasa; Hisayuki Tomokazu; Misawa Masashi; Mori Yuichi; Kudo Toyoki; Wakamura Kunihiko; Kodama Kenta; Hayashi Takemasa; Katagiri Atsushi; Hidaka Eiji; Ishida Fumio; Hamatani Shigeharu, GASTROINTESTINAL ENDOSCOPY, 81(5):AB267, May 2015
• Diagnostic performance of endocytoscopy for evaluating the invasion depth of different morphological types of colorectal tumors, KUDO Toyoki;KUDO Shin-ei;WAKAMURA Kunihiko;MORI Yuichi;MISAWA Masashi;HAYASHI Takemasa;KUTSUKAWA Makoto;ICHIMASA Katsuro;MIYACHI Hideyuki;ISHIDA Fumio;INOUE Haruhiro, Dig Endosc, 27(7):754 - 761, Apr. 2015, Peer-reviewed
• 摘除法からみた LST の中・長期経過─ EMR/EPMR vs. ESD, 石垣智之; 工藤進英; 林武雅; 桜井達也; 矢川裕介; 一政克朗; 豊嶋直也; 三澤将史; 森悠一; 工藤豊樹; r, 胃と腸, 50(4):394, 2015
• 超拡大内視鏡で観察したIIa+IIc型SM深部浸潤癌の1例, 漆原 史彦; 工藤 進英; 森 悠一; 一政 克朗; 石田 文生; 濱谷 茂治, Intestine, 18(6):615 - 619, Nov. 2014
• Double staining with crystal violet and methylene blue is appropriate for colonic endocytoscopy: An in vivo prospective pilot study, Katsuro Ichimasa; Shin-ei Kudo; Yuichi Mori; Kunihiko Wakamura; Nobunao Ikehara; Makoto Kutsukawa; Kenichi Takeda; Masashi Misawa; Toyoki Kudo; Hideyuki Miyachi; Fuyuhiko Yamamura; Shogo Ohkoshi; Shigeharu Hamatani; Haruhiro Inoue, DIGESTIVE ENDOSCOPY, 26(3):403 - 408, May 2014
• Efficiency of endocytoscopy in differentiating types of serrated polyps, Makoto Kutsukawa; Shin-ei Kudo; Nobunao Ikehara; Yushi Ogawa; Kunihiko Wakamura; Yuichi Mori; Katsuro Ichimasa; Masashi Misawa; Toyoki Kudo; Yoshiki Wada; Takemasa Hayashi; Hideyuki Miyachi; Haruhiro Inoue; Shigeharu Hamatani, GASTROINTESTINAL ENDOSCOPY, 79(4):648 - 656, Apr. 2014
• Endocytoscopy can provide additional diagnostic ability to magnifying chromoendoscopy for colorectal neoplasms, Shin-ei Kudo; Yuichi Mori; Kunihiko Wakamura; Nobunao Ikehara; Katsuro Ichimasa; Yoshiki Wada; Makoto Kutsukawa; Masashi Misawa; Toyoki Kudo; Takemasa Hayashi; Hideyuki Miyachi; Haruhiro Inoue; Shigeharu Hamatani, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 29(1):83 - 90, Jan. 2014
• LST の超拡大内視鏡観察, Kudo Toyoki; Kudo Shin-ei; Wakamura Kunihiko; Mori Yuichi; Misawa Masashi; Hayashi Takemasa; Kutsukawa Makoto; Ichimasa Katsuro; Sugihara Yusaku; Ishigaki Tomoyuki; oth, 胃と腸, 49(12):1716, 2014
• Does the selection of colonoscope affect the quality of difficult-insertion cases?, Yamauchi Akihiro; Kudo Shin-Ei; Miyachi Hideyuki; Ogawa Yushi; Igarashi Kenta; Maeda Yasuharu; Oka Yui; Kataoka Shinichi; Kouyama Yuta; Sakurai Tatsuya; Kudo Koki; Ichimasa Katsuro; Hayashi Seiko; Oikawa Hiromasa; Sugihara Yushaku; Misawa Masashi; Mori Yuichi; Kodama Kenta; Kudo Toyoki; Hisayuki Tomokazu; Hayashi Takemasa; Wakamura Kunihiko; Ohkoshi Shogo, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 28:734, Oct. 2013
• The pathological features of depressed-type submucosal-invasive colorectal carcinomas, Kouyama Yuta; Kudo Shin-Ei; Miyachi Hideyuki; Oka Yuijennifer; Yamauchi Akihiro; Ichimasa Katsuro; Matsudaira Shingo; Oikawa Hiromasa; Hisayuki Tomokazu; Hayashi Takemasa; Wakamura Kunihiko; Hidaka Eiji; Ishida Fumio; Hamatani Shigeharu, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 28:557, Oct. 2013
• Endocytoscopy can provide additional diagnostic value to magnifying chromoendoscopy, Igarashi Kenta; Kudo Shin-Ei; Mori Yuichi; Wakamura Kunihiko; Wada Yoshiki; Kutsukawa Makoto; Yagawa Yusuke; Takeda Kenichi; Ichimasa Katsuro; Misawa Masashi; others, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 28:488, 2013
• A case of Crohn's disease with esophageal lesion, Watanabe Daisuke; Mikogami Tetsuya; Kudo Shin-ei; Shakuo Yukiko; Ichimasa Katsuro; Hayashi Seiko; Ishiguro Tomonari; Ogata Noriyuki; Hashimoto Masahiko; Ohtsuka Kazuo, Progress of Digestive Endoscopy, 82(1):92 - 93, 2013
• Diagnostic abilities of four endoscopic modalities for small colorectal polyps: White-light encoscopy vs. non-magnifying NBI vs. magnifying NBI vs. endocytoscopy, Yagawa Yusuke; Kudo Shin-Ei; Mori Yuichi; Wakamura Kunihiko; Misawa Masashi; Wada Yoshiki; Ichimasa Katsuro; Toyoshima Naoya; Hayashi Takemasa; Miyachi Hideyuki; Yamamura Fuyuhiko; Hamatani Shigeharu, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 27:196, Dec. 2012
• Small advanced colorectal cancer shows a high rate of venous invasion, Maeda Chiyo; Kudo Shin-Ei; Mori Yuichi; Takeda Ken-Ichi; Maeda Yasuharu; Ichimasa Katsuro; Mukai Shumpei; Miyahara Koichi; Miyachi Hideyuki; Hidaka Eiji; Ishida Fumio; Tanaka Jun-Ichi; Hamatani Shigeharu, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 27:191, Dec. 2012
• Is it proper to use non-magnified narrow-band imaging for esophageal neoplasia screening? Japanese single-center, prospective study, Akira Yokoyama; Katsuro Ichimasa; Tomonari Ishiguro; Yuichi Mori; Haruo Ikeda; Takemasa Hayashi; Hitomi Minami; Seiko Hayashi; Gen Watanabe; Haruhiro Inoue; Shin-ei Kudo, DIGESTIVE ENDOSCOPY, 24(6):412 - 418, Nov. 2012
• A Prospective Evaluation Using the Colonoscope of the Fecal Occult Blood Test-Negative Colorectal Neoplasms in a Referral Hospital, Wakamura Kunihiko; Kudo Shin-Ei; Ikehara Nobunao; Mori Yuichi; Hayashi Seiko; Takeda Kenichi; Maeda Yasuharu; Ichimasa Katsuro; Kutsukawa Makoto; Misawa Masashi; Kudo Toyoki; Ogata Noriyuki; Kodama Kenta; Wada Yoshiki; Nishiwaki Hirotaka; Hayashi Takemasa; Hosoya Toshihisa; Miyachi Hideyuki; Yamamura Fuyuhiko; Ohtsuka Kazuo, GASTROINTESTINAL ENDOSCOPY, 75(4):343 - 344, Apr. 2012
• The Criteria of Curative Endoscopic Resection for Submucosally-Invasive Colorectal Carcinomas Based on Analyses of Pathological Risk Factors for Lymph Node Metastasis, Miyachi Hideyuki; Kudo Shin-Ei; Ikehara Nobunao; Wakamura Kunihiko; Hayashi Takemasa; Wada Yoshiki; Hosoya Toshihisa; Nishiwaki Hirotaka; Mori Yuichi; Ichimasa Katsuro; Kakimoto Tetsuhiro; Yamamura Fuyuhiko; Ohtsuka Kazuo; Hidaka Eiji; Endo Shungo; Ishida Fumio; Tanaka Jun-Ichi; Hamatani Shigeharu, GASTROINTESTINAL ENDOSCOPY, 75(4):328 - 329, Apr. 2012
• The Optimal Staining Regimen for Colonic Endocytoscopy Could Be 1.0% Methylene Blue for 3 Minutes: An In Vivo Pilot Study, Ichimasa Katsuro; Kudo Shin-Ei; Ikehara Nobunao; Wakamura Kunihiko; Mori Yuichi; Wada Yoshiki; Kutsukawa Makoto; Maeda Yasuharu; Takeda Kenichi; Yokoyama Akira; Ogata Noriyuki; Nishiwaki Hirotaka; Miyachi Hideyuki; Yamamura Fuyuhiko; Ohtsuka Kazuo; Inoue Haruhiro; Hamatani Shigeharu, GASTROINTESTINAL ENDOSCOPY, 75(4):213, Apr. 2012
• pathological characteristics of depressed-type submucosal invasive carcinomas in the colorectum: yia01--07, Oka Yui Jennifer; Kudo Shin-ei; Matsudaira Shingo; Miyachi Hideyuki; Ichimasa Katsuro; Misawa Masashi; Mori Yuichi; Hisayuki Tomokazu; Kodama Kenta; Hayashi Takemasa; oth, Journal of Gastroenterology and Hepatology, 27:55, 2012

Presentations

• Artificial Intelligence in T1 Colorectal Cancer - Patient Selection for Optimal Treatment -, Katsuro Ichimasa, APDW 2025, 18 Nov. 2025, Singapore
• Advances in AI-assisted colonoscopy for early detection of colorectal cancer, Katsuro Ichimasa, SGI 2025, 28 Oct. 2025, Seoul
• Advancing Lower GI Diagnosis: Insights from Innovation and AI Perspectives, Katsuro Ichimasa, JGES International 2025, 05 Sep. 2025, Tokyo
• Utilizing AI for enhanced screening in colonoscopy, Katsuro Ichimasa, IDEN, 12 Jun. 2025, Seoul
• AI AND EID, Katsuro Ichimasa, DDW 2025, 03 May 2025, San Diego
• T1癌のリンパ節転移予測因子について, 椎名脩、工藤進英、一政克朗、神山勇太、高階祐輝、森田友梨子、黒木貴典、加藤駿、若村邦彦、林武雅、澤田成彦、根本哲生、馬場俊之、三澤将史, 第102回大腸癌研究会, Jan. 2025
• The role of withdrawal techniques and technological innovations in boosting adenoma detection during colonoscopy, Ichimasa K, KDDW 2024, 14 Nov. 2024, Seoul
• ARTIFICIAL INTELLIGENCE-ASSISTED “ENDO-VASCULAR HEALING” PREDICTS LONG-TERM SUSTAINED REMISSION IN PATIENTS WITH ULCERATIVE COLITIS : A POST-HOC ANALYSIS OF A PROSPECTIVE COHORT STUDY, 黒木貴典, 前田康晴, 小形典之, 竹中健斗, 高林馨, 河島二郎, 瀧島和美, 小川悠史, 一政克朗, 林武雅, 若村邦彦, 宮地英行, 馬場俊之, 大塚和朗, 緒方晴彦, 森悠一, 三澤将史, United European Gastroenterology Week, 15 Oct. 2024
• Endoscopic Treatment for T2 Colorectal Cancer, Ichimasa K, GIHep & Singapore Hepatology Conference 2024, 25 Jul. 2024, Singapore
• Prediction Of Lymph Node Metastasis In T1 Colorectal Cancer Based On Artificial Intelligence-Assisted Digital Pathology, Ichimasa K, Kudo SE, Misawa M, Kouyama Y, Takashina Y, Tamura E, Sato Y, Sakurai T, Ogawa Y, Matsudaira S, Ogata N, Hayashi T, Wakamura K, Sawada N, Baba T, Nemoto T, Ishida F, Miyachi H., DDW 2024, 18 May 2024, Washington
• Selecting Endoscopic Resection and Surveillance for T1 CRC: What is the Optimal Indication?, Ichimasa K, IMKASID, 12 Apr. 2024, Seoul
• virtual slideのAI解析による大腸T1癌のリンパ節転移予測診断システムの開発, 椎名脩、工藤進英、一政克朗、三澤将史、神山勇太、高階祐輝、林武雅、若村邦彦、澤田成彦、宮地英行、根本哲生、馬場俊之、石田文生, 北部医学会, Jan. 2024
• 早期胃癌との鑑別に困難を要した乳癌の胃転移の一例, 椎名脩, 工藤進英, 豊嶋直也, 加藤駿 , 黒木貴典, 森田友梨子,瀧島和美, 高階祐輝,峯岸洋介, 金城美幸, 奥村大志, 神山勇太,小川悠史 ,前田康晴,中村大樹,石垣智之,一政克朗, 松平真悟, 小形典之,三澤将史,工藤豊樹,久行友和 , 林武雅, 若村邦彦,宮地英行, 馬場俊之,登内晶子,島田翔士, 澤田成彦, 石田文生 ,亀山香織, 根本哲夫, 第112回内視鏡関東支部例会, Jun. 2021
• 新しい医療機器の開発と臨床応用　AIによる大腸T2癌リンパ節転移予測, 中原　健太;石田　文生;一政　克朗;森　悠一;三澤　将史;島田　翔士;竹原　雄介;前田　知世;榎並　延太;澤田　成彦;BENJAMIN Villard;伊東　隼人;森　健策;工藤　進英, 第81回日本臨床外科学会総会, 14 Nov. 2019, 高知
• 大腸T1癌治療における内視鏡的摘除・外科的切除の意義, 中原　健太;石田　文生;一政　克朗;神山　勇太;島田　翔士;石山　泰寛;前田　知世;向井　俊平;森　悠一;三澤　将史;工藤　豊樹;久行　友和;林　武雅;若村　邦彦;澤田　成彦;日髙　英二;工藤　進英, 第89回大腸癌研究会, 06 Jul. 2018, 新潟
• ENDOCYTOSCOPIC DIAGNOSIS OF SESSILE SERRATED ADENOMA/POLYP WITH DYSPLASIA/CARCINOMA, OGAWA Yushi;KUDO Shin-ei;MORI Yuichi;MISAWA Masashi;KATAGIRI Atsushi;MAEDA Yasuharu;TAKEDA Kenichi;ICHIMASA Katsuro;KUDO Toyoki;WAKAMURA Kunihiko;HAYASHI Takemasa;ISHIDA Fumio, ASGE(Digestive Disease Week DDW2017), 06 May 2017, Chicago
• Quantitative image analysis of the luminal area for hyperplastic polyp and sessile serrated adenoma/polyps with endocytoscopy., OGAWA Yushi;KUTSUKAWA Makoto;MORI Yuichi;WAKAMURA Kunihiko;ICHIMASA Katsuro;KOUYAMA Yuta;MISAWA Masashi;KUDO Toyoki;WADA Yoshiki;HAYASHI Takemasa;MIYACHI Hideyuki;ISHIDA Fumio;INOUE Haruhiro, 22nd United European Gastroenterology Week, 18 Oct. 2014, Vienna

Research Projects

• StageⅡ大腸癌の術後化学療法の必要性を判断する、人工知能システムの開発, 一政克朗, 日本学術振興会, 科学研究費助成事業（科研費）, 若手研究, 22K16500, From 20220401
• “早期大腸癌リンパ節転移の有無”を正確に予測し得る人工知能ソフトウェアの開発, 一政克朗, 日本学術振興会, 科学研究費助成事業（科研費）, 若手研究(B), 17K15972, From 20170401