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Observation of Microvessels a...

Observation of Microvessels and Invasion in Early Colorectal Lesions by NBI

NCT ID: NCT02047188

Last Updated: 2014-01-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

418 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-01-31

Study Completion Date

2013-12-31

Brief Summary

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Combined with magnifying endoscopy,narrow-band imaging (NBI) contrasts microvascular architecture on lesion surface.The histology of early colorectal lesions could be predicted under NBI view.However,its capability for estimating invasion depth remains to be verified.The study is based on the hypothesis:NBI can predict histology and invasion depth,combined with the verification of microvessel count and MMP-7 expression.

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Detailed Description

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The microvessel count (MVC) is a classical method of assessing histologic grade.To verify whether NBI could predict histology through microvascular architecture,we measured lesion microvessels by immunohistochemistry.On the other hand,we applied immunohistochemistry of matrix metalloproteinase-7 (MMP-7) to validate the capability of NBI for estimating invasion depth.MMP-7 is directly involved in the processes of growth, invasion, and metastasis of colorectal cancer.Our target was to clarify the diagnostic accuracy of magnifying NBI in early colorectal lesions,combined with the verification of microvessel count and MMP-7 expression.

Conditions

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Colorectal Neoplasms

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* patients of early colorectal lesions with capillary pattern(CP) type II\&III,initially detected by white-light view and then examined by NBI with magnifying endoscopy.

Exclusion Criteria

* lesions with CP type I;
* CP type III lesions with an obvious appearance of advanced cancer;
* lesions that had underwent biopsy;
* patients with inflammatory bowel disease(IBD) or familial adenomatous polyposis(FAP)
* patients with previous colorectal surgery;
* having conditions associated with cardiac,hepatic,renal,and coagulopathy diseases.

Minimum Eligible Age

18 Years

Maximum Eligible Age

90 Years

Eligible Sex

ALL

Accepts Healthy Volunteers