Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is unremarkable . Mild hyperexpansion without flattening of the hemidiaphragms or increase in the diameter of the chest . There is no focal consolidation , pulmonary edema , pleural effusion , or pneumothorax .
    OUTPUT:
    
Mild hyperexpansion of the lungs without flattening of the hemidiaphragms or increase in chest diameter .