Inferior vena cava web
Citation, DOI, disclosures and article data
At the time the article was created Mohammed Al Khader.O.Thabet had no recorded disclosures.View Mohammed Al Khader.O.Thabet's current disclosures
At the time the article was last revised Henry Knipe had the following disclosures:
- Radiopaedia Events Pty Ltd, Speaker fees (past)
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Henry Knipe's current disclosures
Inferior vena cava (IVC) webs are an uncommon condition characterized by obstruction of the hepatic segment of the inferior vena cava by a membrane or fibrous band. This is often associated with occlusion of one or more of the hepatic veins.
If there is hepatic vein involvement, patients may present with Budd-Chiari syndrome.
It may be a congenital/developmental anomaly. More commonly they arise as fibrotic bands as post-thrombotic sequelae with the regressed thrombus replaced by a fibrous laminar structure. It can lead to hepatic outflow obstruction.
- intrahepatic IVC may have a linear filling defect representing the web
- features of hepatic vein obstruction may be present (also see: Budd-Chiari syndrome):
- flow reversal on Doppler ultrasound
- non-obstructed hepatic veins may be dilated
- collateral pathways between obstructed hepatic veins