<prompt> 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:Budd chiari syndromeCirrhosisVeno-occlusive diseaseNon cirrhotic poal fibrosis  <response>: 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 ; Harrisons Internal Medicine, 15th Edition, Page 1759 