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Anatomy
An infant with severe respiratory distress is found to have double aoic arch during investigation. Double aoic arch is due to persistence and continued patency of the segment of:
Right dorsal aoa between the right seventh intersegmental aery and its junction with the left dorsal aoa
Right dorsal aoa between the right sixth intersegmental aery and its junction with the left dorsal aoa
Left dorsal aoa between the right seventh intersegmental aery and its junction with the left dorsal aoa
Left dorsal aoa between the right sixth intersegmental aery and its junction with the left dorsal aoa
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