Bronchiectasis Rheumatoid Overlap Syndrome (BROS) refers to an overlap syndrome with bronchiectasis and rheumatoid arthritis (RA).
Features:
(1) The patient has evidence of rheumatoid arthritis without interstitial lung disease.
(2) The patient has evidence of non-cystic fibrosis bronchiectasis.
(3) The order of onset is not considered.
where:
• Rheumatoid arthritis can also result in interstitial lung disease, which may be complicated by traction bronchiectasis.
For a patient with BROS both the bronchiectasis and rheumatoid arthritis tends to be more severe and associated with a higher mortality when compared to persons with only one of the conditions. The Bronchiectasis Severity Index (BSI) identifies patients at increased risk for mortality.
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