Comparison of magnifying endoscopy with blue light imaging and narrow band imaging for determining the invasion depth of superficial esophageal squamous cell carcinoma by the japanese esophageal society’s intrapapillary capillary loop classification

Waku Hatta, Tomoyuki Koike, Yohei Ogata, Yutaka Kondo, Nobuyuki Ara, Kaname Uno, Naoki Asano, Akira Imatani, Atsushi Masamune

Research output: Contribution to journalArticlepeer-review

Abstract

Blue light imaging (BLI) and narrow-band imaging (NBI) are two modalities that enable narrow-band light observation. We aimed to compare the diagnostic ability of magnifying endoscopy with BLI (ME-BLI) and NBI (ME-NBI) for determining the invasion depth of superficial esophageal squamous cell carcinoma (SESCC) by the Japanese Esophageal Society’s intrapapillary capillary loop (IPCL) classification. We enrolled 81 patients between 2014 and 2018, and the still endoscopic images for diagnosing the invasion depth at the same part in ME-BLI and ME-NBI were registered. Two blinded investigators reviewed them and diagnosed the invasion depth by the IPCL classification. Subsequently, the diagnostic yields in two modalities were compared. The overall accuracies for the invasion depth by the IPCL classification in ME-BLI and ME-NBI did not differ significantly (67.9–71.6% vs. 72.8–74.1%). In the analysis based on the invasion depth, the sensitivities and positive predictive values in tumors invading the muscularis mucosa or submucosa ≤200 µm were low (23.1–30.8% and 16.7–25.0%, respectively) in both modalities. In conclusion, the diagnostic ability for determining the invasion depth of SESCC by the IPCL classification was relatively similar in ME-BLI and ME-NBI, but diagnosis by magnifying endoscopy alone might not be satisfactory.

Original languageEnglish
Article number1941
JournalDiagnostics
Volume11
Issue number11
DOIs
Publication statusPublished - 2021 Nov

Keywords

  • Blue light imaging
  • Esophageal squamous cell carcinoma
  • Invasion depth
  • Narrow-band imaging

ASJC Scopus subject areas

  • Clinical Biochemistry

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