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

Figure 9 OCT image and corresponding histological sections of esophageal wall specimen with a thin nylon suture in the second layer. A: OCT image of esophageal wall specimen with a thin nylon suture in the second layer (more reflective layer). The marker of the thin nylon suture (large white arrow) is recognized in the second layer. B: Corresponding histological section. The fragment of thin nylon suture 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.