Microvascular structural changes in esophageal squamous cell carcinoma pathology according to intrapapillary capillary loop types under magnifying endoscopy

Figure 1 Intrapapillary capillary loops in superficial esophageal lesions under magnifying endoscopy and photographic recordings of both fresh and fixed specimens. A: Intrapapillary capillary loops (IPCLs) of type A under narrow-band imaging or blue laser imaging combined with magnifying endoscopy (ME-NBI/BLI) (magnification: × 80); B: IPCLs of type B1 under ME-NBI/BLI (magnification: × 80); C: IPCLs of type B2 under ME-NBI/BLI (magnification: × 80); D: IPCLs of type B3 under ME-NBI/BLI (magnification: × 80); E: Flesh specimen after endoscopic resection; F: Pathologically fixed specimen with the red line marking the extent of the cancer and the yellow line marking the extent of intraepithelial neoplasia.