New Diagnostic Approach for Esophageal Squamous Cell Neoplasms Using Linked Color Imaging and Blue Laser Imaging Combined with Iodine Staining.

Abstract

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

• Authors: Masato Tsunoda, Yoshimasa Miura, Hiroyuki Osawa, Tsevelnorov Khurelbaatar, Mio Sakaguchi, Hisashi Fukuda, Alan Kawarai Lefor, Hironori Yamamoto
• Journal: Clinical endoscopy (Clin Endosc) Vol. 52 Issue 5 Pg. 497-501 (Sep 2019) ISSN: 2234-2400 [Print] Korea (South)
• PMID: 31499608 (Publication Type: Case Reports)