RT Journal Article SR Electronic T1 Presentation, diagnosis and clinical course of the spectrum of progressive-fibrosing interstitial lung diseases JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 180076 DO 10.1183/16000617.0076-2018 VO 27 IS 150 A1 Vincent Cottin A1 Nikhil A. Hirani A1 David L. Hotchkin A1 Anoop M. Nambiar A1 Takashi Ogura A1 MarĂ­a Otaola A1 Dirk Skowasch A1 Jong Sun Park A1 Hataya K. Poonyagariyagorn A1 Wim Wuyts A1 Athol U. Wells YR 2018 UL http://err.ersjournals.com/content/27/150/180076.abstract AB Although these conditions are rare, a proportion of patients with interstitial lung diseases (ILDs) may develop a progressive-fibrosing phenotype. Progressive fibrosis is associated with worsening respiratory symptoms, lung function decline, limited response to immunomodulatory therapies, decreased quality of life and, potentially, early death. Idiopathic pulmonary fibrosis may be regarded as a model for other progressive-fibrosing ILDs. Here we focus on other ILDs that may present a progressive-fibrosing phenotype, namely idiopathic nonspecific interstitial pneumonia, unclassifiable idiopathic interstitial pneumonia, connective tissue disease-associated ILDs (e.g. rheumatoid arthritis-related ILD), fibrotic chronic hypersensitivity pneumonitis, fibrotic chronic sarcoidosis and ILDs related to other occupational exposures. Differential diagnosis of these ILDs can be challenging, and requires detailed consideration of clinical, radiological and histopathological features. Accurate and early diagnosis is crucial to ensure that patients are treated optimally.Other chronic ILDs with a progressive-fibrosing phenotype may have a clinical course similar to IPF. Although challenging, identification of these patients is crucial, and requires a multidisciplinary approach, to ensure optimal diagnosis and management. http://ow.ly/8q8M30mGDsQ