Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear and hyperinflated . There is flattening of the bilateral hemidiaphragms . There is no pneumothorax or pleural effusion . The hilar and cardiomediastinal silhouettes are normal . Pulmonary vascularity is normal . There is mild biapical pleural thickening . Pectus excavatum of the anterior chest wall is noted .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Hyperinflation of the lungs suggestive of chronic obstructive lung disease .