This issue of Medical Clinics of North America provides general internists with the most essential timely information for the diagnosis and treatment of the pulmonary diseases that they see regularly. Topics covered include lung cancer, pleural diseases, interstitial lung disease, interventional pulmonology, asthma, chronic obstructive lung disease, community-acquired pneumonia, eosinophilic lung diseases, hypoventilation syndromes, pulmonary embolism and pulmonary hypertension, and sarcoidosis.