Depressed-Type Colonic Lesions and “De Novo” Cancer in Familial Adenomatous Polyposis: A Colonoscopist’s Viewpoint

Figure 2

Gross (development/progression) appearance of colorectal neoplasms. This classification is a slight modification of the Paris endoscopic classification and the Japanese rule. The diagnostic characteristics of massive submucosal invasion vary depending on the morphological development of colorectal neoplasms. The red-colored area indicates the cancerous portion.