Idiopathic pulmonary fibrosis (IPF) is a steadily progressive and ultimately fatal disease of unknown origin. Recent years have seen advances in our understanding of IPF and a number of guidelines have been published. But many questions remain unanswered, particularly surrounding probable versus definite IPF. This Monograph aims to discuss the latest achievements in IPF, and covers key diagnostic issues, staging of the disease, complications and comorbidities, treatment, unmet patient needs and perspectives for the future. This book will be of interest to all clinicians and researchers in this area.