胃癌診断体系以外の有用な所見—white globe appearance（WGA）

A Useful Marker other than the Vessel plus Surface Classification System:White Globe Appearance

要旨●WGAは，DL内部に存在すれば，低異型度腺腫や胃炎などの非癌から分化型癌を鑑別診断しうる特異度の高い胃の内視鏡所見である．さらに存在の判定が容易な所見でもあるため，内視鏡医の拡大内視鏡経験を問わず，WGAが存在することによる質的診断能への上乗せ効果が期待される．

　WGA（white globe appearance）, if present within the demarcation line, is a highly specific endoscopic finding that could facilitate endoscopists differentiate between gastric cancer and non-cancer such as low-grade adenomas and gastritis.

　Furthermore, owing to the high-level visibility and ease of determination regardless of the level of endoscopic experience of endoscopists, the identification of WGA is expected to enhance the effect of qualitative diagnostic ability.