NAIMMCQ Anatomy A patient is complaining of difficulty swallowing. A barium contrast x-ray shows a constriction of the esophagus at the level of the third thoracic vertebra. An aortogram shows that the patient has a double aortic arch. Which of the following developmental abnormalities explains this finding?

A patient is complaining of difficulty swallowing. A barium contrast x-ray shows a constriction of the esophagus at the level of the third thoracic vertebra. An aortogram shows that the patient has a double aortic arch. Which of the following developmental abnormalities explains this finding?

Anatomy

A patient is complaining of difficulty swallowing. A barium contrast x-ray shows a constriction of the esophagus at the level of the third thoracic vertebra. An aortogram shows that the patient has a double aortic arch. Which of the following developmental abnormalities explains this finding?

(A)Abnormal persistence of the right dorsal aorta
(B)Abnormal persistence of the right fourth aortic arch
(C)Abnormal persistence of the right seventh intersegmental artery
(D)Abnormal persistence of the right sixth aortic arch
(E)Abnormal persistence of the right third aortic arch

Answer: A: Abnormal persistence of the right dorsal aorta

NAIMMCQ

A patient is complaining of difficulty swallowing. A barium contrast x-ray shows a constriction of the esophagus at the level of the third thoracic vertebra. An aortogram shows that the patient has a double aortic arch. Which of the following developmental abnormalities explains this finding?

A patient is complaining of difficulty swallowing. A barium contrast x-ray shows a constriction of the esophagus at the level of the third thoracic vertebra. An aortogram shows that the patient has a double aortic arch. Which of the following developmental abnormalities explains this finding?

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