Aortic nipple

An aortic nipple is seen in about 10% of PA chest x-rays on the lateral surface of the aortic arch/aortic knob. It represents the left superior intercostal vein.

When prominent, superior vena cava obstruction should be considered (the left superior intercostal vein might be a collateral pathway).

Chest x-ray
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Article Information

rID: 27134
System: Chest
Sections: Gamuts, Approach
Tags: stub, refs, cases
Synonyms or Alternate Spellings:

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