早期食管癌IPCL分型INTRODUCTIONIn this session, the impact of a new magnication endoscopy in the diagnosis of esophageal and gastric lesions is discussed.Development of a new magnication endoscopy So far, many studies utilizing magnication endoscopy have been reported, but some limitations have existed to the routine use of it. Older magnifying endoscopes had a larger diameter, and were relatively difcult for insertion through the pharynx, and therefore magnifying endoscopy actually became an additional study to the routine endoscopic ex-amination. A new magnifying endoscope Q240Z, Olympus Optical Co., Tokyo, Japan keeps the same size in scope diameter approximately to a screening endoscope Q240,Olympus. It also mounts a high resolution CCD tip same to a routine endoscope and it also has a 80magnifying power. In other words, an endoscopist can use a new magni-fying endoscope as a routine screening endoscopy if a magni-fying observation of the lesion is not necessary.Magnication endoscopic ndings in the esophageal lesion In the esophagus, magnication endoscopy facilitates well, both to the diagnosis of the negatively stained lesion with iodine and to the uation of inltration depth of squamous cell carcinoma. In squamous epithelium magni-cation, endoscopy reveals changes of ne vascular network pattern on the mucosa and submucosa. Regularly arranged intrapapillary capillary loops IPCL are normally observed by utilizing magnication endoscopy Fig.