Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is moderately enlarged . Mediastinum appears widened but this is likely due to supine positioning and AP technique . The aortic arch and contour remain distinct . There is mild upper zone vascular redistribution with perihilar haziness and vascular indistinctness compatible with mild pulmonary congestion . No focal consolidation , pleural effusion or pneumothorax is present . Atelectasis is seen in the lung bases . Moderate degenerative changes are again noted in the thoracic spine .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis mild pulmonary vascular congestion .