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

Figure 1 Flow chart of lesion recruitment. All the endoscopic procedures were performed with the patients under conscious sedation with intravenous midazolam, propofol, fentanyl, or pethidine. Cardiorespiratory function was continually monitored throughout the procedure. CLE: Confocal laser endomicroscopy; ER: Endoscopic resection.