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Hemiazygos vein aneurysm: CT documentation
I Hayward1, J V Forrest, S S Sagel
1Department of Radiology, University of California, San Diego, School of Medicine, La Jolla.
Journal of Computer Assisted Tomography
|November 1, 1989
Insights
Idiopathic aneurysm of the hemiazygos vein was diagnosed using CT imaging. This case is compared with hemiazygos vein dilatation from a known cause.
Area of Science:
- Vascular Surgery
- Diagnostic Imaging
- Thoracic Anatomy
Background:
- The hemiazygos vein is a significant venous structure in the thorax.
- Aneurysms, or abnormal dilations, of venous structures are rare.
- Idiopathic venous aneurysms present diagnostic challenges.
Observation:
- A unique case of an idiopathic aneurysm of the hemiazygos vein is presented.
- Computed tomography (CT) was instrumental in diagnosing this rare vascular anomaly.
- A comparative case of hemiazygos vein dilatation with a known etiology is included.
Findings:
- CT imaging confirmed the presence of an idiopathic aneurysm in the hemiazygos vein.
- The idiopathic nature of the aneurysm was established after excluding secondary causes.
- Comparison with a secondary dilatation highlights distinct imaging features.
Implications:
- This case expands the understanding of rare venous aneurysms.
- Highlights the utility of CT in diagnosing complex thoracic vascular pathologies.
- Provides a reference for differentiating idiopathic from secondary hemiazygos vein dilatation.
Abstract:
A case of an idiopathic aneurysm of the hemiazygos vein diagnosed by CT is presented. Then a patient with hemiazygos vein dilatation due to a known etiology is shown for comparison.