The Characterization of Small and Diminutive Colonic Polyps in LCI

Linked Color Imaging vs White-light Colonoscopy in the Characterization of Small and Diminutive Colon Polyps

Colorectal cancer is a maior cause of morbidity and mortality worldwide.Colonoscopy and removal of all adenomas is the most efficient method to prevent colorectal cancer.The most colorectal polyps detected are small(<10mm) and diminutive(≦5mm) during colonoscopy.At that size,the are overwhelmingly hyperplastic or adenomatous,and rarely harbour high-grade dysplasia,cancer or sessile serrated adenoma/polyp.Traditional white-light endoscopy cannot reliably distinguish between small adenomatous and hyperplastic polyps,thus,real-time recognition of the polyp histology during colonoscopy has the potential to minimize both the costs and complications associated with endoscopic biopsy and polpectomy.Linked color imaging(LCI),a new system for endoscopy modality,creates clear and bright endoscopic images by using short-wavelength narrow-band laser light combined with white laser light on the basis of magnifying blue laser imaging(BLI) technology. it is easier to recognize a slight difference in color of the mucosa. This is a study to investigate the impact of Linked color imaging endoscopes on the in vivo histology prediction of colonic polyps.

Study Overview

• Status: Unknown
• Conditions: Small Colon Polyps; Linked Color Imagimg; Diminutive Colon Polyps
• Intervention / Treatment: Other: observation of surface patterns and colors of polyps

Detailed Description

This is a prospective study comparing the accuracy of linked color imaging(LCI) and standard white light colonoscopes in the diagnosis of small and diminutive colorectal polyps.

• Study Type: Observational
• Enrollment (Anticipated): 300

Contacts and Locations

• Study Contact: Name: Pei Deng, Ph.M; Phone Number: +86 01066947473; Email: dengpei1983@21cn.com
• Study Contact Backup: Name: Min Min, Ph.D; Phone Number: +86 01066947473

Study Locations

• China
  • Beijing
    • Beijing, Beijing, China
      • Recruiting
      • Affiliated Hospital to Academy of Military Medical Sciences

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Consecutive adult patients who were referred for elective outpatient colonoscopy will be asked to enroll into this trial if the candidate meets the study inclusion and exclusion criteria.

Description

Inclusion Criteria:

- 1.ability to provide written informed consent and undergoing colonoscopy. 2.The patient is undergoing colonoscopy for screening, for surveillance in follow-up of previous polypectomy or for diagnostic work-up.

3.detection and retrieval for histologic examination of at least one polyp< 10mm in size and/or 5mm in size

Exclusion Criteria:

• Patients were previous colon resection
• Patients were a diagnosis of inflammatory bowel disease,familial polyp syndromes or poor bowel preparation
• suspected chronic stricture potentially precluding complete colonoscopy
• Patients had polypectomy or had coagulopathy/thrombocytopenia
• Patients had diverticulitis or toxic megacolon;previous radiation therapy to the abdomen or pelvis;severe cardiovascular,pulmonary,liver,or renal disease;and coagulation disorders or use of anticoagulants.
• all of polyps could influence surface pattern or/and color assessment

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
the accuracy of predicted in vivo polyp histology	the accuracy of predicted in vivo polyp histology	5 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Sensitivity	Sensitivity of white light endoscopy in predicting histology	5 months
specificity	sensitivity of white light endoscopy in predicting histology	5 months
Sensitivity	Sensitivity of LCI endoscopy in predicting histology	5 months

Collaborators and Investigators

• Sponsor: Affiliated Hospital to Academy of Military Medical Sciences

Publications and helpful links

General Publications

• Longcroft-Wheaton G, Brown J, Cowlishaw D, Higgins B, Bhandari P. High-definition vs. standard-definition colonoscopy in the characterization of small colonic polyps: results from a randomized trial. Endoscopy. 2012 Oct;44(10):905-10. doi: 10.1055/s-0032-1310004. Epub 2012 Aug 14.
• Repici A, Hassan C, Radaelli F, Occhipinti P, De Angelis C, Romeo F, Paggi S, Saettone S, Cisaro F, Spaander M, Sharma P, Kuipers EJ. Accuracy of narrow-band imaging in predicting colonoscopy surveillance intervals and histology of distal diminutive polyps: results from a multicenter, prospective trial. Gastrointest Endosc. 2013 Jul;78(1):106-14. doi: 10.1016/j.gie.2013.01.035. Epub 2013 Apr 11.
• Lee CK, Lee SH, Hwangbo Y. Narrow-band imaging versus I-Scan for the real-time histological prediction of diminutive colonic polyps: a prospective comparative study by using the simple unified endoscopic classification. Gastrointest Endosc. 2011 Sep;74(3):603-9. doi: 10.1016/j.gie.2011.04.049. Epub 2011 Jul 18.

Helpful Links

• diminutive colonic polyps

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 1, 2017
• Primary Completion (ANTICIPATED): March 30, 2018
• Study Completion (ANTICIPATED): March 30, 2018

Study Registration Dates

• First Submitted: November 20, 2017
• First Submitted That Met QC Criteria: November 20, 2017
• First Posted (ACTUAL): November 22, 2017

Study Record Updates

• Last Update Posted (ACTUAL): November 22, 2017
• Last Update Submitted That Met QC Criteria: November 20, 2017
• Last Verified: November 1, 2017

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathological Conditions, Anatomical; Intestinal Polyps; Polyps; Colonic Polyps
• Other Study ID Numbers: 307LCI-DCPs

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No