The fluorescent clipping method involves endoscopic clipping a fluorescent clip into the colonic lesion site in advance of surgery, and observing the position of the fluorescence through the colonic wall by a light source of a certain wavelength band during surgery.

The purpose of this study is to evaluate the efficacy of the localization of colonic lesions using ICG coated endoscopic clip in laparoscopic colon surgery.

Inclusion Criteria:

• Cases which are deemed necessary to mark the location of the colon lesion before surgery

Exclusion Criteria:

• Preoperative colonoscopy is not possible due to intestinal obstruction
• If the lesion is located in the rectal area and the lesion can be confirmed by digital rectal exam
• disagreement with the study