Objective  To explore the diagnostic value of m magnifying endoscopy combined with narrow band imaging and pigment endoscopy in early esophageal cancer and precancerous lesions.

  Methods  Seventy-four patients who underwent endoscopic submucosal dissection (ESD) were selected for preoperative examination of the esophagus by white light endoscopy, magnifying endoscopy combined with narrow band imaging and pigment endoscopy. Biopsy was performed on all the positive sites of magnifying endoscopy combined with narrow band imaging or pigment endoscopy. With the pathological results after ESD as the diagnostic criteria, the results of magnifying endoscopy combined with narrow band imaging and pigment endoscopy were compared with consistency of pathology after ESD. The diagnostic accuracy of the above two endoscopic methods for early esophageal cancer and precancerous lesions was analyzed.

  Results  The pathological consistency of magnifying endoscopy combined with narrow band imaging and ESD was significantly higher than that of pigment endoscopy (P < 0.05).

  Conclusion  Magnifying endoscopy combined with narrow band imaging has a high accuracy in the diagnosis of early esophageal cancer and precancerous lesions. Compared with pigment endoscopy, magnifying endoscopy combined with narrow band imaging is more effective in identifying early esophageal cancer and precancerous lesions.