Virtual Chromoendoscopy for Distal Polyps

Effectivity of virtual chromoendoscopy

时间窗: 3 years

Upon visualization of a polyp in white-light, the location and size (as compared to open biopsy forceps or snare) are noted. Afterwards, virtual chromoendoscopy is used to visualize and enhance the mucosal vascular pattern and the mucosal surface pattern morphology of the polyp. The endoscopist makes a real time assessment of each polyp according to size, shape, Paris classification and surface characteristics including pit pattern and mucosal vascular pattern morphology, colour, and type of depression. Further, the endoscopist is assigning a level of confidence (high or low) to each real time prediction. Afterwards, all polyps are resected using standard techniques and processed for pathological evaluation. Each polyp is assessed by an experienced GI pathologist blinded to the real time prediction of polyp histology. Finally, real time and histological results are compared.