Case of Isolated Absence of the Azygos Vein: Evaluation Using Photon-counting Detector CT.
Tokai J Exp Clin Med
; 49(2): 63-66, 2024 Jul 20.
Article
in En
| MEDLINE
| ID: mdl-38904236
ABSTRACT
The isolated absence of the azygos vein was incidentally found on computed tomography (CT) examination in a 60-year-old female. The exact anomaly can be evaluated on high-resolution images of 0.4-mm slice thickness with low keV using photon-counting detector CT. The azygos vein, including the azygos arch, was absent, and a mildly dilated hemiazygos vein flowed to the left brachiocephalic vein through the left superior intercostal vein. A hemiazygos vein connected the left renal vein at the level of the first lumbar vertebra. This patient was the second patient to undergo evaluation using volume rendering images. High-resolution maximum-intensity projection images were useful for assessing the anatomy. Radiation dose was decreased compared with that in conventional CT.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Azygos Vein
/
Tomography, X-Ray Computed
Limits:
Female
/
Humans
/
Middle aged
Language:
En
Journal:
Tokai J Exp Clin Med
Year:
2024
Document type:
Article
Country of publication:
Japón