Sections View Full Chapter Figures Tables Videos Full Chapter Figures Tables Videos Supplementary Content ++ For further information, see CMDT Part 9-04: Disorders of the Lower Airways +++ Key Features ++ Causes include Airway secretions Aspirated secretions or gastric contents Foreign body Bronchomalacia Airway tumor Extrinsic compression by mass, lymph node or blood vessel Recurrent pneumonia in the same location or slow resolution (> 3 mo) of a pulmonary opacity suggests obstruction +++ Clinical Findings ++ Dyspnea, cough, wheezing, and pulmonary infection may occur Radiographs may show Atelectasis Postobstructive infiltrates Air trapping CT scan may demonstrate the nature and exact location of obstruction +++ Diagnosis ++ Bronchoscopy is required for definitive diagnosis +++ Treatment ++ Treatment of infection, if present Definitive treatment depends on the cause of the obstruction GET ACCESS TO THIS RESOURCE Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth Get Free Access Through Your Institution Contact your institution's library to ask if they subscribe to McGraw-Hill Medical Products. Access My Subscription GET ACCESS TO THIS RESOURCE Subscription Options Pay Per View Timed Access to all of AccessMedicine 24 Hour $34.95 (USD) Buy Now 48 Hour $54.95 (USD) Buy Now Best Value AccessMedicine Full Site: One-Year Individual Subscription $995 USD Buy Now View All Subscription Options