Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There may be trace pleural effusions . Basilar atelectasis is noted without definite focal consolidation . There is no evidence of pneumothorax . The cardiac and mediastinal silhouettes are unremarkable . Flattening of the diaphragms are consistent with chronic obstructive pulmonary disease . Relative lucency of the upper lobes is likely due to pulmonary emphysema .
    OUTPUT:
    
1 . Blunting of the bilateral costophrenic angles , possible trace pleural effusions . Basilar atelectasis . 2 . COPD .