Interrupted inferior vena cava with azygous continuation

Case contributed by Dr Abdallah Khateeb

Presentation

Incidental finding.

Patient Data

Age: 50 years old
Gender: Male

The hepatic segment of the IVC is absent.

The inferior IVC continues superiorly as the enlarged azygous vein.

The hepatic veins directly adjoin into the right atrium. 

The pancreatic tissue completely encircles the second part of the duodenum, defining annular pancreas.

Case Discussion

Interruption of the inferior vena cava (IVC) with azygous continuation occurs when there is failure of formation of the right subcardinal-hepatic anastomosis resulting to atrophy of the subcardinal vein. This results to congenital absence of the hepatic/suprarenal segment of the IVC. The infrarenal IVC continues superiorly as a dilated azygous vein.

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Case information

rID: 44697
Case created: 2nd May 2016
Last edited: 2nd Nov 2016
Inclusion in quiz mode: Included

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