Making Sense of Diffuse Lung Disease

      This issue of Radiologic Clinics of North America updates the reader (both radiologists and nonradiologists alike) about the current concepts and best practices in imaging of ILD in both adults and children. Some diseases, like idiopathic pulmonary fibrosis and hypersensitivity pneumonitis, have recent guideline statements from multiple medical societies that help standardize our interpretation; others rely on decades of expert evaluation and prior literature to guide our reporting. Some concepts, like that of interstitial lung abnormality, have only been introduced in the past few years, and others, like mosaic attenuation, are challenging for both novice and expert readers to consistently assess. Although HRCT remains the mainstay of evaluating these pathologic conditions for both adults and children, new advancements in MR imaging and machine learning are also addressed. Understanding the key points raised by these internationally recognized authors will give increased confidence to anyone tasked with reviewing these cases, myself included. I am greatly appreciative of the effort that these experts have given to this issue.