This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
[{'content': 'Commonest benign tumor of the esophagus: \nSelect and explain. \nA. Leiomyoma, B. Papilloma, C. Adenoma, D. Hemangioma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) LeiomyomaRef: Sabiston 19th Edition, Pages 1047-1048Most commons in Leiomyoma Esophagus:* Most common benign tumor* Most common in Males* Most common in lower 2/3rd of esophagus* Most common symptom: Dysphagia* Most common/best investigation: Barium Swallow* Most common/best treatment: Enucleation', 'role': 'assistant'}]