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Updated: Oct 28, 2025

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
COVID-19 and acute exacerbation of interstitial lung disease
Yasuhiro Kondoh1, Kensuke Kataoka1, Masaru Ando2
1Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan.
Abstract:
We conducted a study to examine the effect of COVID-19 on the acute exacerbation of interstitial lung disease (AE-ILD) early in the COVID-19 epidemic (January 1-April 30, 2020). An online questionnaire survey was conducted, which was completed by 134 hospitals. During this period, 854 patients with AE-ILD (including 12 cases of COVID-AE-idiopathic pulmonary fibrosis were hospitalized at 128 hospitals. In comparison, the total number of AE-ILD hospitalizations during the same period in 2019 was 894. The number of hospitalizations increased at 17 hospitals, decreased at 27, and remained the same at 88 hospitals in 2020 compared to the same period in 2019. In 2020, COVID-19-related acute exacerbations had a significantly worse prognosis than non-COVID-19-related acute exacerbations in both 30-day and 90-day mortality. Because the prognosis of AE-ILD associated with COVID-19 is extremely poor, prevention of COVID-19 is especially important for patients with ILD.
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