<prompt> Which artery is involved in dysphagia lusoriaAbnormal right subclavian arteryAbnormal right thyroid arteryAbnormal right internal carotid arteryAbnormal left subclavian artery  <response>: Ans. is a i.e., Abnormal right subclavian artery Dysphagia Lusoria Dysphagia Lusoria is a disorder of swallowing caused due to vascular anomalies Causes of Dysphagia Lusoria: A right aortic arch A double aortic arch A vascular constricting ring formed by a PDA or a ligamentumarteriosum and the pulmonary artery or aortic arch. An abnormal right subclavian artery.Arterialusoria An abnormal innominate artery. Diagnosis is made by a lipoidal swallow or by arteriography. 