system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Earliest radiological change in RA:
assistant
The correct answer is  Radiological features of RA Evidence of soft tissue swelling and joint effusion Symmetrical involvement Juxta-aicular osteopenia (within weeks) Loss of aicular cailage and bone erosions (after months) Narrowing of joint space Aicular destruction and joint deformity, e.g. subluxation of atlantoaxial and cervical joints Lack of hyperophic bone changes (sclerosis or osteophyte)