Today we welcome Jeffrey R. Galvin, MD, Professor, Departments of Radiology and Internal Medicine (Division of Pulmonary and Critical Care Medicine) at the University of Maryland Medical System, and Chief, Chest Imaging at the American Institute for Radiologic Pathology. Dr Galvin has the distinct pleasure of being board certified in Internal Medicine, Pulmonary Medicine and Radiology! That background makes him one of the world’s experts in diagnostic imaging of the lung. I cannot stress the importance of adding this lecture to a rotating list of lectures you watch at least once a month!