Fig. 3
From: Interstitial lung disease associated with systemic sclerosis (SSc-ILD)
A simple staging system for prediction of survival in patients with SSc-ILD. a Patients with SSc may be classified as having limited disease or extensive disease based on the extent of fibrosis seen on HRCT of the lungs, plus FVC per cent predicted in patients with 10–30% fibrosis on HRCT. b Extensive lung disease is a significant predictor of mortality with a hazard ratio of 3.46 compared to limited disease [30]. Reprinted with permission of the American Thoracic Society. Copyright© 2018 American Thoracic Society. Goh NS et al. 2008. Interstitial lung disease in systemic sclerosis: a simple staging system. Am J Respir Crit Care Med 2008;177:1248–54. The American Journal of Respiratory and Critical Care Medicine is an official journal of the American Thoracic Society