Gastrointestinal bleeding caused by extrahepatic arterioportal fistula associated with portal vein thrombosis

Figure 1 Contrast-enhanced computed tomography scan of the upper abdomen. A: Computerized tomography (CT) scan revealed a large aneurysm (white arrow) with dilated feeding gastroduodenal artery (GDA) (white arrowhead). Draining superior mesenteric vein (SMV) was observed at a lower level; B: Three-dimensional CT reconstruction demonstrated an arterioportal fistula (white arrow) arising from the GDA; C: CT scan showed a high-density mass in the right portal vein (black arrow), the patent main portal vein and SMV.