Depressed-Type Colonic Lesions and “De Novo” Cancer in Familial Adenomatous Polyposis: A Colonoscopist’s Viewpoint
Figure 5
(a) Chromoendoscopic image of transverse colon after indigo carmine dying. (b) The depressed-type lesion at the transverse colon. (c) Magnified image stained by 0.02% crystal violet. The typeVI pit pattern is observed in the depressed surface, and a type I pit is seen at the surrounding margin. (d) The microscopic view of the lesion. This lesions had massively invated the submucosal layer.
