Portal venous gas

Portal venous gas is the accumulation of gas in the portal vein and its branches. It needs to be distinguished from pneumobilia, although this is usually not too problematic, when associated findings are taken into account along with the pattern of gas (i.e. peripheral in portal venous gas, central in pneumobilia).

Gas in the portal veins usually manifests as an echogenic moving foci in the lumen of the portal vein

Associated with sharp spikes on both sides of the basal line on the Doppler spectral display 7.

Although traditionally considered a harbinger of death, portal venous gas is increasingly recognized in a variety of conditions, many of which do not carry as high mortality or morbidity risks.

Causes of portal venous gas are best divided according to the age of the patient:

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Article information

rID: 1913
Section: Gamuts
Synonyms or Alternate Spellings:
  • Portomesenteric vein gas
  • Portomesenteric venous gas
  • Gas within the portal venous system
  • Portal venous air
  • Aeroportia
  • Hepatic portal venous gas

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Cases and figures

  • Case 1: peripheral gas in liver
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  • Case 1: mesenteric gas
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  • Portal venous gas
    Case 2: portal venous gas
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  • Case 3
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  • Case 4: intrahepatic gas with associated pneumatosis intestinalis
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  • Case 5
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  • Case 6: from small bowel infarction
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  • Case 7
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  • Case 8: gas in portal and superior mesenteric vein
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  • Case 9
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  • Case 10
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