Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours are within normal limits . There is marked hyperexpansion of the lungs , in keeping with a known history of asthma . There is however no consolidation or pleural effusion .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Pulmonary hyperexpansion , compatible with a asthma .