Extent of interstitial lung disease (ILD) in patients with systemic sclerosis-associated ILD. A simple stratification that utilises pulmonary function tests (PFTs) and extent of disease on high-resolution computed tomography (HRCT) to provide discriminatory... Extent of interstitial lung disease (ILD) in patients with systemic sclerosis-associated ILD. A simple stratification that utilises pulmonary function tests (PFTs) and extent of disease on high-resolution computed tomography (HRCT) to provide discriminatory prognostic information. FVC: forced vital capacity. Reproduced from [28] with permission from the publisher. Joshua J. Solomon et al. Eur Respir Rev 2013;22:6-19 ©2013 by European Respiratory Society