Katsuro Ichimasa, M.D., Ph.D.
Assistant Professor
Digestive Disease Center
Showa University Northern Yokohama Hospital
Education & Professional Activities
Education
Mar 2007 M.D. Tohoku University, School of Medicine, Miyagi, Japan
Mar 1999 Graduated from Urawa High School, Saitama, Japan
Career
Oct 2016-Present Assistant Professor, Digestive Disease Center, Showa University Northern Yokohama Hospital, Kanagawa, Japan
Apr 2010-Sep 2016 Clinical staff, Digestive Disease Center, Showa University Northern Yokohama Hospital, Kanagawa, Japan
Apr 2007-Mar 2010 Resident, Iwate Prefectural Iwai Hospital, Iwate, Japan
Credentials
Dec 2016 Board Certified Fellow of the Japan Gastroenterological Endoscopy Society
Jan 2015 Board Certified Fellow of the Japanese Society of Gastroenterology
Apr 2013 General Clinical Oncologist, Japanese Board of Cancer Therapy
Apr 2010 Board Certified Member, the Japanese Society of Internal Medicine
Apr 2007 Japanese Medical License (Physician), Registration No. 464206
Affiliated Organizations
Japan Surgical Society (JSS)
The Japan Gastroenterological Endoscopy Society (JGES)
The Japanese Society of Gastroenterology (JSGE)
The Japan Society of Coloproctology (JSCP)
The Japanese Gastroenterological Association (JGA)
Research & Publications
Research
Ichimasa K, Kudo SE, Miyachi H et al. Patient gender as a factor associated with lymph node metastasis in T1 colorectal cancer: A systematic review and meta-analysis. Molecular and clinical oncology 2017; 6: 517-524
Ichimasa K, Kudo SE, Miyachi H et al. Comparative clinicopathological characteristics of colon and rectal T1 carcinoma. Oncol Lett 2017; 13: 805-810
Miyachi H, Kudo SE, Ichimasa K et al. Management of T1 colorectal cancers after endoscopic treatment based on the risk stratification of lymph node metastasis. Journal of gastroenterology and hepatology 2016; 31: 1126-1132
Ichimasa K, Kudo SE, Mori Y et al. Double staining with crystal violet and methylene blue is appropriate for colonic endocytoscopy: an in vivo prospective pilot study. Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 2014; 26: 403-408
Posters and Presentations:
Katsuro Ichimasa, Shin-ei Kudo, Yuichi Mori et al. Artificial intelligence can accurately predict the presence of lymph node metastasis in pT1 colorectal cancers. DDW 2017, Shicago, 2017-5-7
Katsuro Ichimasa, Shin-ei Kudo, Hideyuki Miyachi et al. Patient sex is associated with lymph node metastasis in T1 colorectal cancer: A systematic review and meta-analysis. UEGW 2016, Vienna, 2016-10-18
Katsuro Ichimasa, Shin-ei Kudo, Hideyuki Miyachi et al. Does gender predict lymph node metastasis in pT1 colorectal cancer? A systematic review and meta-analysis. DDW2016, San Diego, 2016-5-22
Katsuro Ichimasa, Shin-ei Kudo, Hideyuki Miyachi et al. The risk factor of lymph node metastasis and the indication for additional surgery in T1 colorectal carcinomas: A single center retrospective study. DDW2015, Topic Forum, Washington, 2015-5-16
Katsuro Ichimasa, Shin-ei Kudo, Hideyuki Miyachi et al. Comparative clinicopathological characteristics of colon and rectal T1 carcinomas: A single-center retrospective study. UEGW 2014, Vienna
Katsuro Ichimasa, Shin-ei Kudo, Hideyuki Miyachi et al. Should colon and rectal T1 cancer be considered as a single entity? Symposium, Travel Grant Prize, UEGW 2013, Berlin
Katsuro Ichimasa, Shin-ei Kudo, Hideyuki Miyachi et al. Clinicopathological features of rectal submucosally-invasive cancers compared with colon ones. Poster Presentation, Travel Grant Prize, UEGW 2012, Amsterdam
Katsuro Ichimasa, Shin-ei Kudo, Kunihiko Wakamura et al. Double staining with 1% methylene blue and 0.05% crystal violet could be the optimal staining regimen for colonic endocytoscopy: an in vivo prospective pilot study. UEGW 2012, Amsterdam
Katsuro Ichimasa, Shin-ei Kudo, Kunihiko Wakamura et al. The optimal staining regimen for colonic endocytoscopy could be 1.0% methylene blue for 3 minutes: an in vivo pilot study. DDW 2012, San Diego