Azygos continuation of the inferior vena cava

Case contributed by Domenico Nicoletti
Diagnosis certain

Presentation

Follow up colonic neoplasia.

Patient Data

Age: 75 years
Gender: Female

Agenesis of the prehepatic portion of the inferior vena cava with collateral flow along the azygos and hemiazygos system, which is tortuous and increased in size. The hepatic veins flow into directly into the right atrium. An aberrant right subclavian vein has been partially imaged. 

Annotated image

Labeled oblique reconstruction. 

Case Discussion

Case courtesy dr.ssa Sara Zanzani.

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