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2591 pages added, reviewed or updated during the last month (last updated: 16/4/2021)


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venous hum in the abdomen

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Uncommonly, in portal hypertension, a venous hum can be heard between the xiphisternum and the umbilicus. It is due to increased blood flow in the umbilical and paraumbilical veins in the falciform ligament. These shunt blood from the portal vein to the epigastric and internal mammary veins in the anterior abdominal wall.

The presence of any abdominal venous hum indicates that:

  • the portal vein is patent
  • the site of portal obstruction is intrahepatic

Last reviewed 01/2018

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