Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Area of Science:

• Pulmonary Medicine
• Radiology
• Rheumatology

Background:

• Systemic sclerosis-related interstitial lung disease (SSc-ILD) diagnosis is challenging due to non-specific symptoms.
• Early detection of SSc-ILD is crucial for timely treatment initiation.

Purpose of the Study:

• To provide practical recommendations for HRCT in SSc-ILD diagnosis and assessment.
• To highlight key HRCT features for differentiating SSc-ILD from idiopathic pulmonary fibrosis (IPF).

Main Methods:

• Review of HRCT imaging features in SSc-ILD.
• Comparison of HRCT findings between SSc-ILD and IPF.
• Identification of HRCT markers for disease severity and prognosis.

Main Results:

• Key HRCT findings in SSc-ILD include a non-specific interstitial pneumonia (NSIP) pattern, peripheral ground-glass opacities, and traction bronchiectasis.
• HRCT can differentiate SSc-ILD from IPF by showing more ground-glass opacity and less coarse fibrosis in SSc-ILD.
• Esophageal dilation, pulmonary hypertension indicators, nodules, and extent of disease are important HRCT findings in SSc-ILD.

Conclusions:

• HRCT is central to diagnosing and assessing SSc-ILD.
• Serial HRCT scans are valuable for monitoring disease progression and treatment response.
• HRCT findings can inform prognosis and risk stratification in SSc-ILD patients.