Confirming the Accuracy of Endoscopic Marking Using a New Marker, a Novel Luminomarker, in Lesion Marking Before Colorectal Cancer Surgery.

Early-stage lesions are difficult to identify intraoperatively during colorectal cancer surgery. Therefore, preoperative lesion marking using a colonoscopic approach is crucial to confirm the location and extent of resection during surgery. Preoperative lesion location can help determine the optimal extent of resection, thereby increasing the accuracy of colorectal surgery. This is particularly true for cases requiring surgery after early-stage colorectal cancer or endoscopic tumor resection. Therefore, preoperative marking with indocyanine green (IDG) allows for laparoscopic identification of the lesion. This is crucial because it allows for precise lesion location, thereby enhancing surgical accuracy and preventing the need for unnecessary additional resections.

NCT Number	NCT07380867
Lead Sponsor	Seoul St. Mary's Hospital Collaborators: Hanlim Pharm. Co., Ltd.
Conditions	Colorectal Cancer, Endoscopic Tattoo of Suspected Colon Cancer, Indocyanine Green (ICG)
Enrollment	30 participants
Start Date	2025-12-22
Primary Completion	2026-12-31 (estimated)
Study Completion	2026-12-31 (estimated)
Updated on ClinicalTrials.gov	2026-02-02