Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs remain hyperinflated . Right greater than left basilar linear opacities , likely due to scarring , are grossly stable . There is persistent slight blunting of the right costophrenic angle . No definite focal consolidation is seen . No large pleural effusion . No definite evidence of pneumothorax . The cardiac and mediastinal silhouettes are stable . The patient is status post median sternotomy and CABG .
    OUTPUT:
    
Hyperinflated lungs consistent with COPD with linear scarring again seen at the lung bases . No evidence of pneumothorax is seen .