Depressed-Type Colonic Lesions and “De Novo” Cancer in Familial Adenomatous Polyposis: A Colonoscopist’s Viewpoint
Figure 4
Case 2. (a) Chromoendoscopic image of sigmoid colon after indigo carmine spraying. (b) The depressed-type lesion at the sigmoid colon. (c) Magnified indigo carmine-sprayed image. It was clear that this lesion had a depressed field. (d) A microscopic view of the lesion. This type0 IIa+IIc lesion invaded the muscle layer. The pathology examination revealed no adenoma.
