Localized Emphysema as a Sign of Incomplete Bronchial Obstruction

in the average case of lung disease, physical examination yields decidedly less accurate information. The plain radiograph cannot, however, give much information as to the state of the bronchi in cases of early bronchial disease unless secondary changes have already occurred in the lungs; and careful consideration of the physical signs may draw attention to a lesion which might be overlooked if too much reliance were placed on the film alone.