Endoscopic submucosal dissection tunneling technique for removal of a giant early esophageal squamous cancer involving 75 % of the esophageal circumference
A 76-year-old man was admitted for evaluation of endoscopic resection of an extensive esophageal intramucosal squamous cell carcinoma occupying 75 % of the proximal esophageal luminal circumference. Advanced endoscopic imaging techniques showed no evidence of invasion ([Fig. 1]).
