Cohort SURVI : Intestinal Ischemia and Vascular Diseases

Inclusion Criteria: * Age \> 18 years old * IMVI including : * acute mesenteric ischaemia defined by acute digestive distress in relation to arterial and/or venous, occlusive and/or non-occlusive splanchnic-mesenteric vascular insufficiency, in the absence of an alternative diagnosis * Chronic mesenteric ischaemia defined by chronic digestive distress (duration of symptom evolution \>30 days) related to occlusive or non- occlusive arterial or venous vascular insufficiency. * MVI: gastrointestinal arterial or venous diseases without ischaemia (atheroma, embolism, thrombosis, dissection, mediolysis, aneurysm, dysplasia, sheathing, compression, torsion) Exclusion Criteria: * Left ischaemic colitis without damage to the celiac trunk and/or superior mesenteric artery * Dissection of the abdominal aorta without intestinal ischaemia * Portal thrombosis without extension to the superior mesenteric vein * Portal thrombosis without extension to the superior mesenteric vein * Traumatic rupture of the digestive arteries * Non-injected abdominal scanner or no abdominal scanner * Patient opposition to participation in research * Patient under guardianship / curators * Vulnerable patient: pregnant or breastfeeding women, persons deprived of their liberty, minors, adults unable or unwilling to give consent