Background: The aim of the study was to evaluate radiographic features of systemic sclerosis-associated interstitial lung disease.
Patients and methods: 116 patients with systemic sclerosis-associated interstitial lung disease (SSc-ILD) from 2010 to 2019 comprised our retrospective study. All patients were subject to high resolution computed tomography (HRCT). ILD patterns were classified into 7 patterns as IIPs and analyzed with pathology. We chose two staging method and two semi-quantitative score methods to evaluate the HRCT performance and analyzed with pulmonary function tests.
Results: Ground-glass opacities were the most common presentation on HRCT, followed by interlobular septal thickening, reticular opacities, intralobular interstitial thickening; honeycombing, traction bronchiectasis and nodules can also be observed. The most common pattern of SSc-ILD was nonspecific interstitial pneumonia (NSIP), secondly was UIP. There was no difference in ILD pattern between HRCT and pathology, and revealed a high congruence. The four HRCT evaluating methods presented in this study all had significant relationships with PETs.
Conclusion: The most common pattern of SSc-ILD was nonspecific interstitial pneumonia (NSIP). The ILD patterns of HRCT coincide very well with histology, and will replace pathology as the gold standard for diagnosis and evaluation of SSc-ILD.
ystemic sclerosis (SScl) is an autoimmune disorder of unknown aetiology, characterised by fibrosis and microvascular injury of the affected organs. The hallmark of the disease is thickening and tightness of the skin and the subcutaneous tissue. SScl can affect virtually any organ systems, most importantly the skin, blood vessels, lungs, kidneys, gastrointestinal tract, and the heart .
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