Assertion: aortic arch's course | /r/HasProperty | unusual
Facets:
Source sentences:
text: (A) Aortic arch had an unusual course immediately crossing the spine to the left and descending on the left side.
text: The course of the right aortic arch was unusual in that is crossed the midline immediately after the take-off of the right subclavian artery; therefore, the entire descending aorta was to the left of the spine ( Fig 2A ).