Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs remain hyperexpanded with attenuation of upper lobe vessels . Cardiomediastinal structures appear relatively diminutive in the setting of hyperexpanded lungs , but appear similar to the prior studies . There are no pleural effusions or pneumothoraces .
    OUTPUT:
    
1 . Hyperexpanded lungs with attenuation of upper lobe vessels , suggesting the possibility of chronic obstructive pulmonary disease or asthma in the appropriate clinical setting . 2 . No evidence of pneumonia .