PMC5343000_01
Spirometry with expiratory loop flattening.
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A spirometry test was performed, which showed a flattening of the expiratory loop in all the performed maneuvers (Fig. 1).
Posteroanterior thoracic X-ray, observing a narrowing of the tracheal lumen in the aortic button, which shows an atypical morphology.
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With the suspicion of an intrathoracic obstruction, a posteroanterior chest X-ray was made, that showed a narrowing of the tracheal lumen at the aortic arch, which in turn showed an atypical morphology (Fig. 2).
The thoracic CT showed the presence of a double aortic arch that completely surrounded the trachea and the esophagus, conditioning a stenosis of less than 50%.
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It completely surrounded the trachea and esophagus (Fig. 3).
Pictures taken during the gastroscopy, which showed the imprints produced by both aortic arches on the esophagus.
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Subsequently, a gastroscopy was performed confirming those findings (Fig. 4).