A Pilot Study on Usefulness of Probe-based Confocal Laser Endomicroscopy Targeted Gastric Biopsy

In this arm1, an investigator observes a cancerous lesion using white light endoscopy. In addition, contrast dye for confocal laser endomicorscopy (fluorescein sodium 0.1mL/kg) is administered. Then, the cancerous lesion is observed using probe-based confocal laser endomicroscopy. The biopsy would be done 5 times at the most suspcious parts of the cancerous lesion.

In this arm2, an invesigator observes a cancerous lesion using white light endoscopy. The biopsy would be done 5 times at the most suspicious parts of the cancerous lesion.