Endovascular treatment of unique colonic arteriovenous malformation with dual supply from superior and inferior mesenteric arteries

Colonic arteriovenous malformations (AVMs) are well recognized in the literature and commonly manifest as colitis, abdominal pain, and rare cases have been reported of liver congestion. Dual-supply superior artery/ inferior mesenteric artery (SMA/IMA) colonic AVMs have never been reported and only one case of treating portal hypertension due to an AVM with an endovascular approach has been reported. We present a case of dual-supply SMA/IMA colonic AVM manifesting as hepatic venous congestion and demonstrate an endovascular approach to treatment. Level of evidence: Level 4, case series.