COPD patients with dynamic hyperinflation have a poor cardiovascular response to exercise associated in part with ventilation constraints, left ventricle stoke volume and lower oxygen uptake. (Source: Respiratory Research)

Which regimen is best when put to the test -- in patients presenting with respiratory distress? Thorax (Source: Medscape Today Headlines)

This article reviews current concepts in pathologic classification of lung cancer based on the 2004 World Health Organization classification of lung tumors and the 2011 International Association for the Study of Lung Cancer (IASLC)/American Thoracic Society (ATS)/European Respiratory Society (ERS) classification of lung adenocarcinoma. Preinvasive lesions are discussed. The major changes in lung disease diagnosis affected by the IASLC/ATS/ERS classification are presented. For adenocarcinomas diagnosed in small biopsies, specific terminology and diagnostic criteria are proposed along with recommendations for strategic management of tissue and EGFR mutation testing in patients with advanced adenocarcinoma. Histologic criteria are also presented for other tumors. (Source: Clinics in Chest Med...

It has been proposed that invasive carcinoma of the bronchus develops through a transition from preinvasive lesions to overt malignancy. Newer diagnostic technologies have provided a more sensitive way to diagnose preinvasive lesions and a better understanding of the prevalence of such lesions. The natural history of preinvasive lesions has not been well defined; however, there is evidence that high-grade lesions are at a higher risk of progression to carcinoma. Molecular alterations have been described in preinvasive lesions and may help better predict which lesions will progress. Several noninvasive techniques are available for the treatment of high-grade lesions. (Source: Clinics in Chest Medicine)