Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrate hyperinflated lungs . Linear opacity projecting over the left mid and lower lung fields likely reflects scarring , present on prior examination . No focal opacity convincing for pneumonia is present . Cardiomediastinal and hilar contours are stable . No evidence of pulmonary edema . There is no pleural effusion or pneumothorax . There is no air under the right hemidiaphragm .
    OUTPUT:
    
Hyperinflated lungs without evidence of an acute intrathoracic abnormality .