Masterclass: Advanced GI Endoscopic Imaging (On-Demand) | December 2025-Raising the Bar in Colorectal Neoplasia Detection- The Role of Magnification, Chromoendoscopy and Virtual Chromoendoscopy

Raising the Bar in Colorectal Neoplasia Detection- The Role of Magnification, Chromoendoscopy and Virtual Chromoendoscopy

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Video Transcription

Video Summary

Dr. Ralph Bishops presented on colon polyp detection challenges and imaging advancements. Key issues affecting detection include bowel prep quality, equipment, and operator factors like fatigue, leading to up to 26% missed polyps. Detection rates are crucial as they relate directly to colorectal cancer risk, especially considering serrated lesions responsible for around 20% of cancers. Improving detection involves reducing exposure error (via good bowel prep and high-definition endoscopes) and recognition error through enhanced imaging. Classical dye-based chromoendoscopy improves detection but is cumbersome, often replaced by virtual chromoendoscopy techniques like narrow-band imaging (NBI), linked color imaging (LCI), and TXI, which boost adenoma detection during routine exams with minimal extra effort. These methods also benefit high-risk groups such as Lynch syndrome patients. Virtual chromoendoscopy assists in identifying serrated lesions by enhancing mucosal contrast and lesion borders. Magnifying endoscopy mainly aids lesion characterization to guide treatment. In summary, virtual chromoendoscopy is practical, effective, and widely available, but detection success still hinges on optimal bowel preparation and exposure.

Asset Subtitle

Raf Bisschops

Keywords

colon polyp detection

virtual chromoendoscopy

narrow-band imaging

adenoma detection rate

serrated lesions