Organizing pneumonia preceding rheumatoid arthritis

Area of Science:

• Rheumatology
• Pulmonology
• Immunology

Background:

• Rheumatoid arthritis (RA) patients frequently develop interstitial lung disease, typically years after joint symptoms.
• Organizing pneumonia as an initial manifestation of RA is rare, with unknown clinical features.

Purpose of the Study:

• To describe the clinical features of organizing pneumonia preceding rheumatoid arthritis.
• To review literature on patients diagnosed with organizing pneumonia before meeting RA criteria.

Main Methods:

• Case presentation of organizing pneumonia as the first RA manifestation.
• Systematic literature review of pathologically diagnosed organizing pneumonia preceding RA diagnosis.

Main Results:

• Patients with organizing pneumonia preceding RA showed high prevalence of rheumatoid factor (RF) or anti-cyclic citrullinated peptide (anti-CCP) antibodies.
• The majority of patients developed RA within one year of organizing pneumonia diagnosis.

Conclusions:

• Organizing pneumonia can be an early indicator of rheumatoid arthritis.
• Patients with organizing pneumonia and positive RF or anti-CCP antibodies require vigilant monitoring for RA development, particularly in the first year post-diagnosis.