This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver disorders, Subject name: Pediatrics
[{'content': 'A 12-year-old boy presents with hematemesis, malaena and mild splenomegaly. There is no obvious jaundice or ascites. The most likely diagnosis is: \nSelect and explain. \nA. EHPVO, B. NCPF, C. Cirrhosis, D. Malaria with DIC', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The given history is suggestive of poal hypeension Extrahepatic poal vein obstruction is an impoant cause of poal hypeension in childhood.', 'role': 'assistant'}]