A rare variant between the left superior vena cava and the azygos vein

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• 作者：Jing Li ; Qinghua Mao ; Zhanguo Sun ; Qingchen Li
• 关键词：Double superior vena cava ; Azygos vein ; Anatomical variation
• 刊名：Surgical and Radiologic Anatomy
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：39
• 期：1
• 页码：107-109
• 全文大小：
• 刊物主题：Imaging / Radiology; Orthopedics; Anatomy;
• 出版者：Springer Paris
• ISSN：1279-8517
• 卷排序：39

文摘

During the educational dissection of a 68-year-old Chinese male cadaver, an azygos vein (AV) coursing on the left side with double superior vena cava was observed. The left superior vena cava (LSVC) began from the confluence of the left internal jugular and left subclavian veins, and extended downwards medially into the left edge of the dilated coronary sinus. The right superior vena cava was formed by the union of the right internal jugular and right subclavian veins, and drained into the right atrium from the above. The AV was formed by the union of the right and left ascending lumbar veins at the level of the tenth thoracic vertebra. It ascended along the left margin of the thoracic vertebra, receiving almost the bilateral posterior intercostal veins and then extended into the LSVC on the left wall via the azygos arch. Better understanding of these variations will reduce unnecessary and potential harmful testing, and unneeded patient anxiety.