Enlarged azygos vein

Last revised by Mohammad Taghi Niknejad on 6 Oct 2022

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, Niknejad M, Bell D, et al. Enlarged azygos vein. Reference article, Radiopaedia.org (Accessed on 16 Apr 2024) https://doi.org/10.53347/rID-9093

DOI:

https://doi.org/10.53347/rID-9093

Permalink:

https://radiopaedia.org/articles/9093

rID:

9093

Article created:

17 Mar 2010, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no recorded disclosures.

View Yuranga Weerakkody's current disclosures

Last revised:

6 Oct 2022, Mohammad Taghi Niknejad ◉

Disclosures:

At the time the article was last revised Mohammad Taghi Niknejad had no financial relationships to ineligible companies to disclose.

View Mohammad Taghi Niknejad's current disclosures

Revisions:

15 times, by 9 contributors - see full revision history and disclosures

Systems:

Vascular, Cardiac

Sections:

Gamuts

Synonyms:

Enlarged azygous vein : Differential diagnosis
Enlarged azygous vein
Differential diagnosis for an enlarged azygous vein
Dilated azygos vein
Dilated azygous vein
Azygos dilatation
Azygous dilatation
Azygos enlargement
Azygous enlargement

An enlarged/dilated azygos vein may result from a number of physiological as well as pathological causes. The enlarged azygos vein may be seen as a widened right paratracheal/paraspinal stripe on a frontal chest radiograph.

azygos continuation of the inferior vena cava (IVC)
aortoazygos fistula ¹
congestive heart failure (CHF)
constrictive pericarditis
congenital SVC interruption (distal to azygos entry)
SVC obstruction (distal to azygos entry ³)
congenital IVC interruption
IVC obstruction
pericardial effusion
portal hypertension
right ventricular strain
tricuspid insufficiency

Differential diagnosis

The differential diagnosis depends on the radiographic study being reviewed; on a CXR, the differential includes:

References

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