Abstract
Infantile lobar emphysema is a symptom complex representing a spectrum of diseases characterized by overdistention of a pulmonary lobe by a check valve mechanism. The earlier in life infantile lobar emphysema presents, the more severe are the symptoms. Half of the cases appear in the first 4 weeks of life. The chest radiograph is the best diagnostic tool but can be misinterpreted. Computed tomography sometimes discloses the cause, which appears to be bronchial obstruction in 25% of cases. The bronchial obstruction may be due to intrinsic defects or to extrinsic compression. Bronchoscopy should be performed only in certain cases and then only with careful anesthetic management.
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