Abstract

Right sided arcus aorta anomaly is usually asymptomatic. Rarely, this anomaly is symptomatic due to external compression of the trachea and esophagus. A 17 year-old man presented with exertional dyspnea. Pulmonary function tests indicated intrathoracic upper airway obstruction. Thoracic MR imaging revealed external compression of the trachea from right sided arcus aorta.