Identification of the layered morphology of the esophageal wall by optical coherence tomography

Figure 3 OCT image and corresponding histological sections of esophageal wall specimen injected with cyanoacrylate adhesive into the first layer. A: OCT image of the esophageal wall specimen injected with cyanoacrylate adhesive into the first layer (relatively less reflective layer). The injection location of cyanoacrylate adhesives into the first layer is clearly recognized. B: Corresponding histological section. The cyanoacrylate adhesive is observed in the stratified squamous epithelium (HE, original magnification × 4). C: Corresponding histological section (EM, original magnification × 4). The white and black bars represent 1 mm. EP: Stratified squamous epithelium; LP: Lamina propria; MM: Muscularis mucosa; SM: Submucosa; MP: Muscularis propria; AD: Adventitious tissue.