초록 열기/닫기 버튼

A 62-year-old man with a flat early esophageal cancer was referred for endoscopic treatment. White light imaging revealed a pale redlesion, whereas linked color imaging (LCI) and blue laser imaging (BLI) yielded purple and brown images, respectively. Iodine stainingdemonstrated a large unstained area with a homogenous but very weak pink-color sign. This area appeared more clearly as purpleand green on LCI and BLI, respectively; however, a different colored portion was observed at the 4 o’clock position inside the iodineunstainedarea. Histopathology findings of the resected specimen revealed squamous intraepithelial neoplasia at the 4 o’clock positionand an esophageal squamous cell carcinoma in the remaining iodine-unstained area. LCI and BLI combined with iodine stainingproduce characteristic images that overcomes the pink-color sign, reflecting the histological features of a flat esophageal neoplasm. Thisnew method is useful for detailed evaluation of early flat squamous cell neoplasms.