This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infective Arthritis, Subject name: Orthopaedics
[{'content': 'Frozen pelvis is seen in - \nSelect and explain. \nA. Osteoarthritis, B. Potts disease, C. Actinomycosis, D. Reiters disease', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Potts disease o A term for significant involvement of the pelvic floor by malignancy, usually carcinoma, or ttuberculosis; in which there is massive extension of pathology to the urinary bladder, female genital tract, and sigmoid colon. Adequate resection of a frozen pelvis is virtually impossible; chemotherapy and radiation therapy are palliative at best.", 'role': 'assistant'}]