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Liver: Portal Venous Air Imaging Pearls - Educational Tools | CT Scanning | CT Imaging | CT Scan Protocols - CTisus
Imaging Pearls ❯ Liver ❯ Portal Venous Air

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  • Hepatic Gas on CT: Differential Diagnosis

    Noniatrogenic Causes
    - Mesenteric infarction
    - Necrotizing enterocolitis
    - Liver abscess
    - Hepatic artery thrombosis in a liver transplant
    - Inflammatory bowel disease
    - Abdominal trauma
    - Emphysematous cholecystitis
    - Ascending cholangitis
  • Hepatic Gas on CT: Differential Diagnosis

    Iatrogenic Causes
    - Bilary gas following sphincterotomy or choledochojejunostomy
    - Hepatic artery embolization
    - Percutaneous tumor ablation
    - Colonoscopy
    - Barium enema examination
    - Liver biopsy
    - Migration of hepatic venous gas (from spinal, or epidual catheter or lumbar puncture)
    - Oxidized cellulose
  • “ The presence of hepatic venous gas has traditionally been associated with serious clinical disease and a mortality rate of up to 75%; the gas is most often portal venous in location and results from bowel necrosis.”
    Hepatic Gas: Widening Spectrum of Causes Detected at CT and US in the Interventional Era
    Shah PA et al.
    RadioGraphics 2011; 31:1403-1413
  • “ Detection of gas, which is present in 19% of cases or less, provides support for a higher degree of confidence in the imaging diagnosis of abscess.”
    Hepatic Gas: Widening Spectrum of Causes Detected at CT and US in the Interventional Era
    Shah PA et al.
    RadioGraphics 2011; 31:1403-1413

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