Detection of superficial esophageal squamous cell neoplasia by chromoendoscopy-guided confocal laser endomicroscopy

Figure 4 En bloc endoscopic resection for esophageal lesions. A: Lugol’s iodine chromoendoscopy showed an unstained lesion located in the esophagus; B: The marks surrounding the lesion are at least 5 mm away from the lesion; C: Upper gastrointestinal endoscopy showed an artificial ulceration after ESD; D: En bloc resected specimen. 3.0 cm × 3.0 cm; E: The resected specimen was fixed in 10% formaldehyde solution and continuously sliced into 2 mm sections from the proximal end to the distal end for pathology.