This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Dysphagia lusoria is due to? 
Select and explain. 
A. Esophageal diveiculum, B. Aneurysm of aoa, C. Esophageal web, D. Compression by aberrant blood vessel
D: Compression by aberrant blood vessel
Answer: D: Compression by aberrant blood vessel 
Explanation: Dysphagia lusoria is a disorder of swallowing caused due to vascular anomalies and includes: A right aoic arch A double aoic arch A vascular constricting ring formed by a PDA or a ligamentum aeriosum and pulmonary aery or aoic arch An abnormal right subclan aery An abnormal innominate aery Diagnosis is made by lipoidal swallow or aeriography. Ref: Bailey and Love 24/e, Page 995