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

Figure 11 OCT image and corresponding histological sections of esophageal wall specimen with a thin nylon suture in the fourth layer. A: OCT image of esophageal wall specimen with a thin nylon suture in the fourth layer (more reflective layer). The marker of thin nylon suture (large white arrow) is recognized in the fourth layer. B: Corresponding histological section. The fragment of nylon suture is observed in the submucosa. (HE, original magnification × 4). C: Corresponding histological section (EM, original magnification × 4). The white and black bars represent 1 mm.