This issue of Clinics in Chest Medicine is Guest Edited by Peter J. Barnes FRS, FMedSci from Imperial College London and will fosus on COPD. Article topics include epidemiology, pathophysiology, cellular and molecular mechanisms and comorbidities of COPD, diagnosis and phenotype of COPD, pulmonary rehabilitation, asthma and COPD, biomarkers, bronchodilators, non invasive ventialtion, and new drug therapies.

A panel of recognized authorities comprehensively review the medical, surgical, and pathophysiologic issues relevant to lung volume reduction surgery for emphysema. Topics range from the open technique and video-assisted thoracoscopic approaches to LVRS, to anesthetic management, to perioperative and nursing care of the patient. The experts also detail the selection of candidates for LVRS, the clinical results and clinical trials in LVRS, and the effects of LVRS on survival rates.

This issue of Clinics in Chest Medicine, guest-edited by Dr. Gerard Criner and Dr. Bartolome Celli, is focused on Chronic Obstructive Pulmonary Disease. Topics discussed in this issue include but are not limited to: COPD Pathogenesis; Epidemiology of COPD; Host, Gender, and Early Life Factors as Risks for COPD; Alpha One Antitrypsin Deficiency; Lung Function Testing; Assessing Symptom Burden; Chest Imaging in the Diagnosis and Assessment of the Patient with COPD; Biomarkers in the Diagnosis and Assessment of COPD; Asthma/COPD Overlap; Multimorbidity in the Patient with COPD; Definition Causes, Pathogenesis, and Consequences of Exacerbations; Treatment of Acute Exacerbations; Prevention of Exacerbations; Bronchodilators; Benefits and Risks of Inhaled Corticosteroids in COPD; Systemic Medications; Smoking Cessation/Vaccinations; Pulmonary Rehabilitation; Oxygen Therapy/Noninvasive Ventilation; and Interventional and Surgical Therapies for COPD.

This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.

In this issue, guest editors bring their considerable expertise to this important topic.Provides in-depth reviews on the latest updates in the field, providing 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 these timely topic-based reviews.

In this issue of Clinics in Chest Medicine, guest editor Dr. Jane P. Ko brings her considerable expertise to the topic of Thoracic Imaging. Top experts discuss CT signs in the lungs; pericardial recesses on CT: implications for the pulmonologist; imaging of solid pulmonary nodules; subsolid nodules: significance and current understanding; ICU imaging pearls and pitfalls; and more. - Contains 20 relevant, practice-oriented topics including imaging the patient with COVID-19: acute to long COVID; CTEPH: clinical and imaging evaluation; update on interstitial pneumonias; ILAs: current understanding; imaging of lung transplantation; imaging of the large airways; and more. - Provides in-depth clinical reviews on thoracic imaging, 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.

Drs. Nici and ZuWallack have assembled an expert team of authors covering topics such as: The history of pulmonary rehabilitation, The systemic nature of chronic lung disease, Evidence-based outcomes from pulmonary rehabilitation in the COPD patient, Location, duration and timing of pulmonary rehabilitation, Exercise training in pulmonary rehabilitation, Strategies to enhance the benefits of exercise training in the respiratory patient, Collaborative self management and behavior change, Approaches to outcome assessment in pulmonary rehabilitation, and more!