About this trial
The aim of this study is to evaluate the role of indocyanine green (ICG) injection in fluorescence-guided lymphatic mapping during laparoscopic colon cancer resection. This is a single-center prospective single-arm pilot clinical study that will include at least 25 patients with resectable colon cancer. All enrolled patients will undergo intraoperative subserosal ICG-guided lymphatic mapping before dissection, and intravenous ICG perfusion assessment before anastomosis. The primary goal is to determine the proportion of analyzable pN+ patients in whom all metastatic lymph nodes identified on final histopathology are located within the ICG-mapped lymphatic basin.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
None
Disqualifiers
Emergency surgery (obstruction/perforation with sepsis) requiring urgent operation.
Known allergy or contraindication to ICG (including prior anaphylaxis to ICG; severe hypersensitivity history per anesthesia assessment).
Pregnancy or breastfeeding.
Severe hepatic failure (because ICG clearance is hepatobiliary) or other contraindication determined by anesthesia team.
Trial design
Single group
Treatments tested in this trial
Indocyanine green (ICG) injection for intraoperative lymph node imaging
DrugIndocyanine green is injected subserosally around the tumor in four quadrants for lymphatic mapping. Additionally, intravenous ICG is administered before bowel anastomosis to assess perfusion of the bowel ends using near-infrared fluorescence imaging.
Laparoscopic Colon Cancer Resection
Procedure/SurgeryStandard laparoscopic colectomy with oncologic lymphadenectomy performed according to institutional practice.
Treatment groups
Trial outcomes
Primary outcomes
Proportion of analyzable pN+ patients with all metastatic lymph nodes located within the ICG-mapped lymphatic basin
This outcome evaluates the accuracy of ICG mapping. It is measured as the proportion of analyzable pN+ patients in whom all metastatic lymph nodes identified on final histopathology are located within the ICG-mapped lymphatic basin.
Secondary outcomes
Successful intraoperative visualization of lymphatic drainage (Feasibility rate)
The rate of successful intraoperative visualization of lymphatic channels and nodal basins after subserosal ICG injection.
Frequency of fluorescence-guided modification of mesenteric excision
The frequency at which ICG mapping prompts a modification in the extent of mesenteric excision or pedicle clearance.
Change in the planned transection line due to perfusion assessment
The proportion of cases in which intravenous ICG perfusion assessment leads to a change in the planned bowel transection line.
Metastatic lymph nodes identified outside conventional resection margins
The frequency of identifying metastatic lymph nodes located outside the predefined conventional resection margins using ICG guidance.
Locations
Sponsors and contacts
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