Multiple variations of azygos system of veins: a case report

Maloor, PA and Nayak, Satheesha B and Reghunathan, D and Shetty, SD and Prabhu, GS (2017) Multiple variations of azygos system of veins: a case report. Journal of Morphological Sciences, 34 (1). pp. 7-9. ISSN 2177-0298

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Abstract

Azygos venous system drains the venous blood from thoracic wall. Knowledge of variations of its course and tributaries is important to cardiothoracic surgeons, radiologists and orthopedic surgeons. We observed the following variations in the azygos veins. Both azygos and hemiazygos veins were formed by union of lumbar azygos and subcostal veins of corresponding sides. The ascending lumbar vein did not drain into the azygos system. The hemiazygos vein had a larger diameter than the lower part of azygos vein and it joined azygos vein at the level of seventh thoracic vertebra. Accessory hemiazygos vein was totally absent. The azygos vein received 4th to 11th right posterior intercostal veins and also received 3rd to 6th left posterior intercostal veins. Hemiazygos vein received 7th to 11th left posterior intercostal veins.

Item Type: Article
Uncontrolled Keywords: Azygos vein; hemiazygos; accessory hemiazygos vein; anatomic variation.
Subjects: Medicine > MMMC Manipal > Anatomy
Depositing User: KMC Manipal
Date Deposited: 15 May 2017 11:29
Last Modified: 15 May 2017 11:29
URI: http://eprints.manipal.edu/id/eprint/148875

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