Novel Biomarkers in Assessment of Interstitial Lung Disease Associated With Rheumatoid Arthritis Patients

Inclusion Criteria: * Confirmed diagnosis of Rheumatoid arthritis, age \> 18 years. Exclusion Criteria: * Patients who refuse to participate in the study, * Patients with evidence of worsening or exacerbation of RA over the previous 6 months, * concomitant diagnosis of an active neoplasia, or * patients who had previously received radiotherapy, * End organ failure.