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: Medicine
[{'content': 'An 18 yr old male presents with massive hematemesis; he has history of fever for the past 14 days for which he was managed with drugs; moderate splenomegaly is present; diagnosis is: \nSelect and explain. \nA. NSAID induced duodenal ulcer, B. Drug induced gastritis, C. Esophageal varices, D. None of the above.', 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer is C (Esophageal varices) Presence of massive haematemesis in the background of moderate splenomegaly suggests a diagnosis of esophageal varices secondary to poal hypeension. Esophageal varices : Most common presentation of esophageal varices is Hematemesis. 'Splenomegaly, sometimes with hipersplenism, is the next most common presenting feature in the poal vein obstruction.'", 'role': 'assistant'}]