<prompt> Dysphagia lusoria is due to -Oesophageal diverticulumAneurysm of aortaOesophageal webCompression by aberrant blood vessel.  <response>: Dysphagia Lusoria is a disorder of swallowing caused due to vascular anomaliesCauses of Dysphagia Lusoria A right aortic archA double aortic archA vascular constricting ring formed by a PDA or a ligamentum arteriosum and the pulmonary artery or aortic arch.An abnormal right subclavian artery. Arteria lusoriaAn abnormal innominate artery.Diagnosis is made by a lipoidal swallow or by arteriography. 