Endoscopic esophageal mucosal resection using a transparent tube.

Generally, it is considered technically impossible to perform an extensive mucosal resection of the esophagus using endoscopy. We have developed a new method of endoscopic esophageal mucosal resection using a transparent tube (EMRT). With this technique, any amount and any part of the esophageal mucosa can be safely and easily resected. After an experimental study, EMRT was performed in 11 patients and there were no major complications. Near-total circumferential resection of the mucosa was possible, and the surface of the esophageal muscle layer (non-bleeding resection layer) was left intact. We performed this technique on a patient with a mucosal cancer of the esophagus, and succeeded in resecting the lesion during a short course of treatment. We conclude that EMRT is of value in the endoscopic treatment of early-stage esophageal cancer.