This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
[{'content': 'Rokitansky-Aschoff sinuses are seen in which of the following conditions? \nSelect and explain. \nA. Acute cholecystitis, B. Chronic cholecystitis, C. Xanthogranulomatous cholecystitis, D. Gallbladder carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rokitansky-Aschoff sinuses are seen in Chronic cholecystitis. It is due to outpouchings of mucosal epithelium through the wall of the gallbladder forming these sinuses. Can contain fragmented bill pigment stones.', 'role': 'assistant'}]