Cancer recurrence with severe fibrosis after cold snare polypectomy resected by means of endoscopic submucosal dissection.

Magnified narrow-band imaging showed an irregular surface and vessel pattern, and chromoendoscopy with crystal violet staining showed not an amorphous pattern but an irregular pit pattern (Fig. B Video 1 b Endoscopic submucosal dissection using a traction device and a scissors-type knife for the recurrence after the CSP. [Extracted from the article]