Diminutive Colon Polyps Clinical Trial
Official title:
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.
| Status | Recruiting |
| Enrollment | 300 |
| Est. completion date | March 30, 2018 |
| Est. primary completion date | March 30, 2018 |
| Accepts healthy volunteers | No |
| Gender | All |
| Age group | 18 Years to 75 Years |
| Eligibility |
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 |
| Country | Name | City | State |
|---|---|---|---|
| China | Affiliated Hospital to Academy of Military Medical Sciences | Beijing | Beijing |
| China | Affiliated Hospital to Academy of Military Medical Sciences | Beijing | Beijing |
| Lead Sponsor | Collaborator |
|---|---|
| Affiliated Hospital to Academy of Military Medical Sciences |
China,
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. — View Citation
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. — View Citation
Repici A, Hassan C, Radaelli F, Occhipinti P, De Angelis C, Romeo F, Paggi S, Saettone S, Cisarò 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. — View Citation
| Type | Measure | Description | Time frame | Safety issue |
|---|---|---|---|---|
| Primary | the accuracy of predicted in vivo polyp histology | the accuracy of predicted in vivo polyp histology | 5 months | |
| Secondary | Sensitivity | Sensitivity of white light endoscopy in predicting histology | 5 months | |
| Secondary | specificity | sensitivity of white light endoscopy in predicting histology | 5 months | |
| Secondary | Sensitivity | Sensitivity of LCI endoscopy in predicting histology | 5 months |