This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Surgery
[{'content': 'NCPF is due to:- \nSelect and explain. \nA. Extrahepatic obstruction, B. Intrahepatic pre-sinusoidal obstruction, C. Intrahepatic sinusoidal obstruction, D. Intrahepatic post-sinusoidal obstruction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: NON-CIRRHOTIC POAL FIBROSIS (NCPF) Characterized by widespread fibrosis of liver ( mainly poal, subcapsular and rarely perisinusoidal) causing wide variation in normal architecture There is no true cirrhosis. Hallmark of diseases is Thrombosis/sclerosis of the poal vein branches. Poal and peripoal fibrosis of varying extent (No bridging fibrosis). Ultrasound shows normal splenopoal axis. Withered tree appearance and peripoal fibrosis is seen in NCPF.', 'role': 'assistant'}]