What is an aberrant right subclavian artery? An aberrant right subclavian artery is a rare congenital anomaly where the artery arises from the distal part of the aortic arch instead of its normal position and passes behind the esophagus. Here’s what you need to know: 🔸This abnormal course can compress the esophagus and cause difficulty swallowing, a condition known as dysphagia lusoria. 🔸Symptoms may range from mild discomfort to persistent dysphagia, especially with solid foods. 🔸Diagnosis i