Accuracy of Sentinel Lymph Node Biopsy in Nodal Staging of High Risk Endometrial Cancer

ICG (Indocyanine Green) will be used as a fluorescent agent to identify sentinel lymph nodes intraoperatively. One 25 mg vial of ICG will be reconstituted in 10 mL of aqueous solvent (2.5 mg/mL). The solution will be injected at the 3 and 9 o'clock positions of the cervical stroma. 0.5 mL is injected superficially (submucosa) and 0.5 mL is injected deep (\~8mm) in the cervical stroma for a total injection volume of 2 mL.