Upper endoscopy is the accepted standard for making the diagnosis of various upper gastrointestinal diseases including esophageal cancers. Morphologically, esophageal cancer can be divided into superficial esophageal cancer and advanced esophageal cancer. Progress in endoscopic diagnostic techniques, such as Lugol staining and magnifying endoscopy with narrowband imaging, has led to the detection of increased numbers of superficial esophageal cancer. The chance of recovery improves when doctors detect the cancer at an early stage. In this chapter, we introduce various endoscopic findings of superficial and advanced esophageal cancer, and two brief interesting esophageal cancer cases are also introduced.
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