Season 4 Case 1
History: Chest Pain

Answer:
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Answer: Right aortic arch
Short reference: http://radiopaedia.org/articles/right-sided-aortic-arch
TL;DR reference: http://www.radiologyassistant.nl/en/p4718c7f2eb7cc/vascular-anomalies-of-aorta-pulmonary-and-systemic-vessels.html