This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gallbladder, Subject name: Surgery
[{'content': "This procedure is performed in which of the following conditions? \nSelect and explain. \nA. Mucocele, B. Mirizzi's syndrome, C. Xanthogranulomatous cholecystitis, D. Acalculous cholecystitis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: The procedure is percutaneous cholecystostomy . The procedure is performed in acalculous cholecystitis Acalculous cholecystitis. Inflammation of GB in absence of stones. TOC: lap. cholecystectomy if patient is unstable - percutaneous cholecystostomy.', 'role': 'assistant'}]