Definition: Veins which return blood from the intestines; the inferior mesenteric vein empties into the splenic vein, the superior mesenteric vein joins the splenic vein to form the portal vein.
occlusion or obstruction: coord NIM with MESENTERIC VASCULAR OCCLUSION (IM); venous thrombosis: index under MESENTERIC VASCULAR OCCLUSION (IM) + VENOUS THROMBOSIS (IM) + MESENTERIC VEINS (NIM)
Other names Veins, Mesenteric; Vein, Mesenteric; Mesenteric Vein