Presentation
Hepatic perfusion disorder in previous tomography.
Patient Data



Celiac trunk agenesis. A common artery that continues as SMA generates tortuous CHA and SA (coeliaco-mesenteric trunk). There is an artery that connects the proximal SMA to the proximal IMA (Arc of Riolan).



Highlighting the arc of Riolan.
Case Discussion
Arc of Riolan is an inconstant artery that connects the proximal superior mesenteric artery (SMA) or one of its primary branches to the proximal inferior mesenteric artery (IMA) or one of its primary branches.
The common origin of celiac artery and SMA is called as coeliaco-mesenteric trunk, and it represents < 1% of celiac artery variants.