Background: Vascular ring is a rare diagnosis in adults as the majority is diagnosed in symptomatic infants or young children. Only a few cases are documented in the literature of dysphagia in adults caused by a vascular ring. It is not uncommon for an adult diagnosed with vascular rings to have asthma in his medical history. Case Presentation: A 61-year-old woman presented with dysphagia with a medical history of slight asthma and left hemithyroidectomy. After extensive workup, it was determined to be the result of a right-sided aortic arch with a left-sided arteriosum ligament, a left aberrant subclavian artery with Kommerell’s diverticulum, and a ventral left common carotid artery. Conclusion: A right-sided aorta with a left-sided arteriosum ligament is a vascular ring and should be recognized as such. Although rare in adults, one should be triggered to think of a vascular ring in patients with dysphagia, especially with mild asthma and reflux complaints.

Keywords: right sided aorta, case report, dysphagia, vascular ring