PMC6831794_01
Fluorescent clips (ZEOCLIP FS: Zeon Medical Co., Ltd., Tokyo) placed endoscopically in 4 places every 90 degrees within the colonic lumen.
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FS clips were placed during colonoscopy on the day preceding the surgery in two sites because removal of both the tumor and the polyp was planned. For each site, 4 clips were intraluminally placed every 90 degrees around the corresponding lesion, respectively (Fig. 2).
Intraoperative observation using a full-color fluorescent laparoscope VISION SENSE (Medtronic Co., U.S.) of the serosal layer.
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Locations of the fluorescent clips were easily confirmed using a full-color fluorescent laparoscope, VISION SENSE (Medtronic Co., U.S.A.) (Fig. 3), and a sufficient margin was taken while separating the anal side of the tumor using an automatic suture device.
Resected specimen with clips marking the tumor and polyp locations.
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Upon intraoperative examination of the dissected specimen, 4 clips were found in each placement location, i.e. of the tumor and of the polyp, respectively (Fig. 4).