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

Figure 4 OCT image and corresponding histological sections of esophageal wall specimen injected with cyanoacrylate adhesive into the second layer. A: OCT image of the esophageal wall specimen injected with cyanoacrylate adhesive into the second layer (more reflective layer). The injection location of cyanoacrylate adhesive into the 2nd layer is clearly recognized. B: Corresponding histological section. The cyanoacrylate adhesive is observed in the lamina propria (HE, original magnification × 4). C: Corresponding histological section (EM, original magnification × 4). The white and black bars represent 1 mm.