Aortic arch with four vessels: aberrant right subclavian artery.
D001013:Aorta, Thoracic / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000196:embryology; D005260:Female; D005318:Fetal Heart / Q000196:embryology; D006801:Humans; D011247:Pregnancy; D013348:Subclavian Artery / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000196:embryology; D018615:Ultrasonography, Doppler, Color / Q000379:methods