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: Pediatrics
[{'content': 'A 8 yr old boy presents with upper GI bleeding. On examination, he is found to have splenomegaly; there are no signs of ascites, or hepatomegaly; esophageal varices are found on upper GI endoscopy. Most likely diagnosis is: \nSelect and explain. \nA. Budd chiari syndrome, B. Cirrhosis, C. Veno-occlusive disease, D. Non cirrhotic poal fibrosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The diagnostic criteria of NCPF includes splenomegaly, normal liver function test, esophageal varices (90-95% cases), patent hepatic and poal veins and no evidence of cirrhosis on biopsy. Based on this criteria, the most probable diagnosis in this patient is Non cirrhotic poal fibrosis. Ref: Arun J. Sanyal, Vijay H. Shah (2005), Chapter 25, "Noncirrhotic Poal Hypeension and Poal Vein Thrombosis", In the book, "Poal Hypeension: Pathobiology, Evaluation and Treatment", USA, Pages 411-12 ; Harrison\'s Internal Medicine, 15th Edition, Page 1759', 'role': 'assistant'}]