Preoperative Embolization of the Inferior Mesenteric Artery in Colorectal Surgery

Inclusion Criteria: * Adult patients * Patient to benefit from left colonic surgery or rectal surgery with upper ligation of the inferior mesenteric artery and colorectal or colo anastomosis * Person affiliated to or benefiting from social security * Person who has given written informed consent Exclusion Criteria: * History of digestive resection or abdominal aorta surgery * Renal failure with GFR \< 30 ml/min (MDRD) * History of severe allergy to iodine contrast medium * Pregnant, parturient, lactating women * Patient subject to a legal protection measure or unable to express his non-opposition (guardianship, curatorship) * Patient deprived of liberty by judicial or administrative decision