This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hiatal Hernias, Subject name: Surgery
[{'content': 'A 61 year old female presents with recurrent pneumonia, regurgitation of food and feeling of fullness. Most probable diagnosis is? \nSelect and explain. \nA. Hiatus hernia, B. Carcinoma esophagus, C. Tracheoesophageal fistula, D. Achlasia cardia', 'role': 'user'}, {'content': "Answer: A \nExplanation: ANSWER: (A) Hiatus herniaREF: Maingot's lltn ed p. 203, CSDT 11th ed p. 482 -485This is an answer of exclusion:In carcinoma esophagus and achlasia the prominent symptom is dysphagia and not regurgitation of food.Tracheoesophageal fistula is unlikely in this age groupSo we are left with hiatal hernia in which all the above mentioned symptoms are present.", 'role': 'assistant'}]