supreme intercostal vein

first posterior intercostal vein

A vein that is tributary of the superior intercostal vein and drains the first intercostal space.

Type Bone
Parent Structure thoracic vein
Latin Name first posterior intercostal vein
FMA ID 4744

Frequently Asked Questions

What is the supreme intercostal vein?
The supreme intercostal vein, also called the highest intercostal vein, is a small vein that drains blood from the first intercostal space and empties into the superior intercostal vein.
Where does the supreme intercostal vein drain?
The supreme intercostal vein drains into the superior intercostal vein, which in turn drains into the brachiocephalic vein on the left side or the azygos/hemiazygos system on the right. It is described as a tributary of the superior intercostal vein.
What is the first intercostal space and what does the supreme intercostal vein drain from it?
The first intercostal space is the space between the first and second ribs. The supreme intercostal vein collects venous blood from the muscles, pleura, and other soft tissues within this space, running alongside the first posterior intercostal artery.
How does the supreme intercostal vein differ from the superior intercostal vein?
The superior intercostal vein typically drains the second and third intercostal spaces, while the supreme intercostal vein specifically drains the first intercostal space and is a tributary feeding into the superior intercostal vein. The supreme intercostal vein is smaller and more cranially positioned.
Why is venous drainage of the upper intercostal spaces clinically relevant?
Understanding the venous drainage of the upper chest is important in thoracic surgery, central venous catheter placement, and interpretation of chest imaging. Anomalies or enlargement of the superior intercostal veins can appear on chest radiographs or CT scans as the 'aortic nipple' sign, and may indicate venous obstruction or anomalous drainage.

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.