PRECAUTIONS FOR UPPER GASTROINTESTINAL ENDOSCOPY SCREENING USING HIGH-RESOLUTION TRANSNASAL ENDOSCOPY

Abstract

Gastric X-ray screening is rapidly replacing EGD screening in population-based gastric cancer screening. An EGD is necessary to ensure minimal patient discomfort and achieve high accuracy. There were concerns about the accuracy of ultrathin transnasal endoscopes because of their inferior image quality compared to oral endoscopes. However, OLYMPUS GIF-1200N and Fujifilm Medical EG-840N, which were released in 2020 and 2022, respectively, are third-generation high-definition ultrathin endoscopes with image qualities equivalent to that of oral endoscopes and considered promising scopes for future gastric cancer screening. Here, we will explain the precautions and tips for evaluation in endoscopy using high-resolution transnasal ultrathin endoscopes.