In this issue of Clinics in Chest Medicine, guest editors Drs. Shannon Kasperbauer and Rachel Thomson bring their considerable expertise to the topic of Nontuberculous Mycobacterial Pulmonary Disease. Nontuberculous mycobacterial pulmonary disease (NTM-PD) is a challenging infection which is becoming increasingly prevalent, particularly in the elderly, for reasons which are unknown. In this issue, top experts discuss topics such as environmental sources and transmission of nontuberculous mycobacteria; global epidemiology; host susceptibility; investigation and management of bronchiectasis in nontuberculous mycobacterial pulmonary disease; and more. Contains 15 practice-oriented topics including novel antimicrobial agents in nontuberculous pulmonary disease; host directed therapy in nontuberculous pulmonary disease; cystic fibrosis related nontuberculous mycobacterial pulmonary disease; surgical resection in nontuberculous mycobacterial pulmonary disease; and more.  Provides in-depth clinical reviews on nontuberculous mycobacterial pulmonary disease, offering actionable insights for clinical practice.  Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.