Aortic nipple
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An aortic nipple is seen in about 10% of PA chest x-rays on the lateral surface of the aortic knob. It represents the left superior intercostal vein.
When prominent, superior vena cava obstruction should be considered.
-<p>An <strong>aortic nipple</strong> is seen in about 10% of PA chest x-rays on the lateral surface of the aortic knob. It represents the <a href="/articles/left-superior-intercostal-vein">left superior intercostal vein</a>. </p>- +<p>An <strong>aortic nipple</strong> is seen in about 10% of PA chest x-rays on the lateral surface of the aortic knob. It represents the <a href="/articles/left-superior-intercostal-vein">left superior intercostal vein</a>.</p><p>When prominent, superior vena cava obstruction should be considered.</p>
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