Koichi Koizumi
Tokyo, Japan
Last Updated: 09/26/2026
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Found 45 publications
Worst Histology-Based Risk Stratification for Lymph Node Metastasis in Patients With T1b Colorectal Cancer: A Retrospective Pathology-based Study.
Journal: DEN open
Published: December 02, 2025
Clinical Guidelines for Diagnosis and Management of Juvenile Polyposis Syndrome in Children and Adults-Secondary Publication.
Journal: Journal of the anus, rectum and colon
Published: January 18, 2023
Upper gastrointestinal tumors are unrelated to the APC genotype in APC-associated polyposis.
Journal: Japanese journal of clinical oncology
Published: July 13, 2021
Long-term outcomes of standardized colonic stenting using WallFlex as a bridge to surgery: Multicenter prospective cohort study.
Journal: Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
Published: May 31, 2021
Clinicopathological features of sporadic MSI colorectal cancer and Lynch syndrome: a single-center retrospective cohort study.
Journal: International journal of clinical oncology
Published: January 11, 2021
CT imaging findings of anti-PD-1 inhibitor-related enterocolitis.
Journal: Abdominal radiology (New York)
Published: October 20, 2020
Determining the difference in the efficacy and safety of self-expandable metallic stents as a bridge to surgery for obstructive colon cancer among patients in the CROSS 0 group and those in the CROSS 1 or 2 group: a pooled analysis of data from two Japanese prospective multicenter trials.
Journal: Surgery today
Published: October 15, 2019
Endoscopic submucosal dissection for multiple gastric superficial adenocarcinomas identified in patient with familial adenomatous polyposis.
Journal: Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
Published: October 01, 2019
Factors related to difficult self-expandable metallic stent placement for malignant colonic obstruction: A post-hoc analysis of a multicenter study across Japan.
Journal: Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
Published: February 07, 2018
Differences in histological features and PD-L1 expression between sporadic microsatellite instability and Lynch-syndrome-associated disease in Japanese patients with colorectal cancer.
Journal: International journal of clinical oncology
Published: November 01, 2017
Fracture of a Colonic Self-expandable Metallic Stent in Malignant Colonic Obstruction.
Journal: Internal medicine (Tokyo, Japan)
Published: October 17, 2017
Tumor development in Japanese patients with Lynch syndrome.
Journal: PloS one
Published: September 20, 2017
Last Updated: 09/26/2026