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: Surgery
[{'content': 'Vanishing bile duct syndrome is seen in - \nSelect and explain. \nA. Chronic viral hepatitis, B. Sarcoidosis, C. Lymphoma, D. Non-cirrhotic portal fibrosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The vanishing bile duct syndrome and adult bile ductopenia are rare conditions in which there are a decreased numbers of bile ducts seen in liver biopsy specimens.\n\nCauses of vanishing bile duct syndrome.\n\nChronic rejection after liver transplantation\nGraft-versus-host disease after BM transplantation\nSarcoidosis\nDrugs like Chlorpromazine\nIdiopathic', 'role': 'assistant'}]