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
All are X-ray findings of RA except ? 
Select and explain. 
A. Reduced joint space, B. Soft tissue shaddow, C. Periaicular new bone formation, D. Subchondral cyst
C: Periaicular new bone formation
Answer: C: Periaicular new bone formation 
Explanation: Ans. is 'c' i.e., Periaicular new bone formation 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)