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': 'All are the features of rheumatoid ahitis except? \nSelect and explain. \nA. Osteosclerosis of joint, B. Soft tissue swelling, C. Narrowing of joint space, D. Periaicular osteoporosis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Osteosclerosis of joint Radiological features of RA Following features are seen on X-ray :- Reduced joint space Erosion of aicular margins Subchondral cysts Juxta-aicular rarefaction Soft tissue shadow at the level of the joint because of joint effusion or synol hyperophy Deformities of the hand and fingers Periaicular osteopenia (osteoporosis)", 'role': 'assistant'}]