aortic nipple

a·or·tic nip·ple

colloquial term for the radiographic appearance of the left superior intercostal or accessory hemiazygos vein as a bump on the aortic knob.

a·or·tic nip·ple

(ā-ōr'tik nip'ĕl)
A colloquial term for the radiographic appearance of the left superior intercostal or accessory hemiazygos vein as a bump on the aortic knob.
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