Aneurysms in the splenoportomesenteric system constitute a rare entity whose etiology is still to be determined. Predisponent factors include portal hypertension, chronic hepatic disease and trauma, among others. The authors present a case of an aneurysm at the splenomesenteric confluence where it joins the portal vein, in a female, 62-year-old patient with no predisponent factor.
Aneurysm; Portal vein; Splenic vein; Mesenteric veins