PMC4897974_01
61-year-old woman with extrahepatic portal vein aneurysm. Contrast enhanced CT image (A) demonstrates small bowel obstruction, evidenced by dilated small intestinal loops with air-fluid levels (arrowheads). 5 cm diameter extrahepatic portal vein aneurysm (asterisk) located at superior mesenteric vein and splenic vein confluence. (B) Intrahepatic portal vein shows normal caliber. Mild dilation of the intrahepatic biliary system is evident (arrowhead).
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The patient's post-operative course was complicated by an episode of small bowel obstruction diagnosed by abdominal computed tomography (CT) (Fig. 1). However, aneurysmal dilation of the portal vein was incidentally noted at that time (Fig. 1).
61-year-old woman with extrahepatic portal vein aneurysm. Gray scale (A) and color Doppler (B) ultrasound images delineate extrahepatic location and patency of portal vein aneurysm (asterisk).
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A baseline ultrasound was performed to better delineate the aneurysm, and showed no evidence of hepatic cirrhosis or intrinsic liver disease, portal hypertension, or portal vein thrombosis (Fig. 2).