Although right sided arcus aorta anomaly is the most
common anomaly of arcus aorta, incidence of this anomaly
is estimated 0.1% and 0.2% in adults 1,2
. In Turkey, this
ratio is reported to be 0.06% 5
. This occurs in both sexes.
Our patient was a man diagnosed at age 17 years.
Right sided arcus aorta anomaly is usually asymptomatic
1. Rarely, it may be symptomatic due to external
compression of the trachea and esophagus 4. The most
common complaints of these patients are dysphagia and
stridor, but persistent cough and asthma-like symptoms can occur due to compression of the trachea 1,3. In the
past, an article which included eight patients with right
sided arcus aorta was reported 4. For of these patients
were symptomatic. Two of them suffered from exertional
dyspnea, the other two suffered from cough and
dyspnea. Our patient presented with exertional dyspnea.
Pulmonary function tests are useful for considering
tracheal compression in a patient with right sided arcus
aorta anomaly who especially suffered from cough and
dyspnea 5. Our patient’s pulmonary function tests demonstrated that the expiratory limb of flow-volume
loops is flattened, while the inspiratory portion is unchanged.
So we suspected an intrathoracic upper airway obstruction.
Right sided arcus aorta anomaly is usually diagnosed
by chest radiography. Thoracic CT and thoracic MR imaging
confirm the diagnosis.
In conclusion, right sided arcus aorta anomaly must
be kept in mind in patients who suffer from dyspnea,
chronic cough and dysphagia.