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
60-year-old male with history of dysphagia can take liquid only and history of smoking and weight loss. Diagnosis is: 
Select and explain. 
A. Achalasia cardia, B. Barret's esophagus, C. Carcinoma esophagus, D. Corrosive
C: Carcinoma esophagus
Answer: C: Carcinoma esophagus 
Explanation: Ans. (c) Carcinoma EsophagusRef: Bailey and Love 26th Edition, Page 1006* Most common cause of rapid progressive dysphagia and weight loss in carcinoma