Inclusion Criteria:  Age 18 years or older Capable of giving informed consent ASA Classification: status I-III Planned for PME or TME with minimally invasive approach and primary anastomosis Strong suspicion of or biopsy-verified sigmoid or rectal cancer Stage I-IV cancer  Exclusion Criteria:  Known allergy to ICG or iodine Emergency procedure Pregnancy or if the patient is currently nursing Surgeons decide to do unblinded quantitative or qualitative ICG-FA