ICG Anastomosis Control in Colon Surgery

Inclusion criteria: * elective setting of surgery * segmentary left colon surgery including transverse resection, splenic flexure resection and left colectomy even for benign or malign pathology * 30 days of post-operative follow-up at least available from medical documentation * primary colo-colic or colo-rectal anastomosis with or without preventing ostomy * more than 18 years old, less than 90 years old Exclusion criteria: * terminal colonic stoma without anastomosis creation after demolitive step * extended transverse right hemicolectomy * left hemicolectomy with high vascular ligation * associated bowel or another splanchnic resection (i.e. neoplastic infiltration) * previous colic surgery * synchronous neoplasm * not reporting in operating form details about vascular ligation * lack in reporting in medical records of primary outcomes * stage IV cancer * ASA IV * less than 18 years old, more then 90 years old * emergency setting