Subclinical or preclinical interstitial lung disease in patients with connective tissue diseases is not a benign entity, and many patients may experience progression of lung fibrosis before a diagnosis of ILD is made, investigators caution.
Dr Anna-Maria Hoffmann-Vold
Among patients with connective tissue disease assessed with baseline and follow-up high-resolution CT scans for ILD, nearly one-fourth had evidence of ILD progression over a median of 4.5 years, reported Anna-Maria Hoffmann-Vold, MD, PhD, from Oslo University Hospital. "Subclinical ILD is frequently present across all connective tissue diseases. It progresses over time in a substantial subgroup of people comparable to patients with clinical ILD, and our findings really question the terms 'subclinical/preclinical ILD,' which may potentially lead to a suboptimal watchful waiting management," she said in an oral abstract presentation during the European Respiratory Society International Congress.
Jesse Roman, MD, CEO at the Jane & Leonard Korman Respiratory Institute at Thomas Jefferson University, Philadelphia, who was not involved in the study, commented that the findings regarding subclinical disease come as no surprise.
"The connective tissue disorders are linked to interstitial lung disease, and we believe that they are the primary causes of interstitial lung diseases in most countries," he said in an interview.
"Basically, what you're detecting is that if you can identify these people early, then you can see that they behave like any other patients with interstitial lung disease with progression, so most experts recommend that patients with any kind of connective tissue disorder be followed with either CT scans or pulmonary function tests, or carefully interviewed every time they come to identify any kind of very early interstitial lung disease – particularly in patients with rheumatoid arthritis, in patients with systemic sclerosis, and in patients with dermatomyositis," Roman said.
