Type of Article:  Case Report

Volume 5; Issue 2.3 (June 2017)

Page No.: 3949-3951

DOI: https://dx.doi.org/10.16965/ijar.2017.226


Krupa Daniel *1, Christal Abisha 2, Daphne Ann Jacob 2.

*1 Associate Professor of Anatomy, Southern Medical University, Guangzhou P.R, China.

2 MBBS 3rd Year, Southern Medical University, Guangzhou P.R, China.

Address for Correspondence: Dr.D.Krupa Daniel, Associate Professor of Anatomy, Southern Medical University, Guangzhou P.R, China. Phone no.: +86-15626441489 E-Mail: danielkrupa1309@gmail.com


Background: The Posterior intercostal veins on the left side, below the upper three intercostal spaces, usually form two trunks named as hemiazygous and accessory hemiazygous veins.The Hemiazygous Vein  begins in the left ascending lumbar or renal vein. It enters the thorax, through the left crus of the diaphragm, and, ascending on the left side of the vertebral column, as high as the ninth thoracic vertebra, passes across the column, behind the aorta, esophagus, and thoracic duct, to end in the azygos vein. It receives the lower four or five intercostal veins and the subcostal vein of the left side, and some esophageal and mediastinal veins.  The Accessory Hemiazygous Vein  descends on the left side of the vertebral column. It receives veins from the three or four intercostal spaces between the highest left intercostal vein and highest tributary of the hemiazygous; the left bronchial vein sometimes opens into it. It either crosses the body of the eighth thoracic vertebra to join the azygos vein or ends in the hemiazygous.

Case Report: Presented case found during routine dissection at Southern Medical University, Guangzhou P.R, China.

Discussion: The accessory hemiazygous vein, also called the superior hemiazygous vein, drains the superior left hemithorax. In a majority of cases there is a small connection to the left superior intercostal vein, and rarely, the accessory hemiazygous vein drains into the brachiocephalic vein.  In our routine dissection we found the the abnormal drainage of accessory hemiazygous vein and hemiazygous vein which are togetherly forming the Intra azygous vein

Conclusion: Knowledge of the aberrant venous anatomy is also important in surgery and catheter placement. The hemiazgyous system has also been mistaken for abnormal lymph nodes and knowledge of the azygous system and its variant anatomy is important. The patient with insufficient or wrong imagistic studies can become a victim of a false diagnostic, sometimes alarming, such as a malignant space substituting process. Present study we found the following variations with absence of accessory hemiazygousvein , the upper left posterior intercostal veins joined with hemiazygous vein to form interazygous vein.

KEY WORDS : Azygous Vein, Hemiazygous vein, Accessory Hemiazygous, Vein.


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Cite this article: Krupa Daniel, Christal Abisha, Daphne Ann Jacob. A CASE REPORT ON ABNORMAL DRAINAGE OF ACCESSORY HEMIAZYGOUS VEIN. Int J Anat Res 2017;5(2.3):3949-3951. DOI: 10.16965/ijar.2017.226