<prompt> Which of the following statement regarding Rheumatoid ahritis is false?It is symmetrical involving small and large jointsPulmonary nodules are presentJuxta aicular osteoporosis may be presentNone of the above  <response>: Rheumatoid ahritis is a chronic systemic inflammatory disease, with symmetric involvement of small and large joints. Joint stiffness lasting for more than 30minutes is the prominent symptom. Characteristic Xray findings include juxta aicular osteoporosis, joint erosions and joint space narrowing. Rheumatoid factor and antibodies to citrullinated peptides are seen in 70 - 80 cases. Reference: Harrisons Principles of Internal Medicine 18e chapter 321. 