Analysis and Interpretation of Magnifying Endoscopy with Narrow Band Imaging (M-NBI) Findings in Gastric Epithelial Tumors (Early Gastric Cancer and Adenoma) Stratified for Paris Classification of Macroscopic Appearance

Abstract

In this chapter, I will present early gastric epithelial neoplasias (differentiated gastric cancer and adenoma), stratified for Paris classification of macroscopic appearance, and their characteristic magnifying endoscopy (ME) findings. I will explain how to read and interpret ME findings using the VS classification, with reference to the pathohistological findings. The Paris classification is usually applied to early gastric cancers, but for convenience’s sake I will use it for adenomas as well in this chapter. First table of this chapter shows the macroscopic classification of the presented cases and the characteristic ME findings I wish to highlight. In particular, I will summarize the ME findings of the “background mucosa,” “marginal area,” and “lesion” and add an explanation for each.