Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Lower lung volumes seen on the current exam . The lungs are grossly clear noting some linear opacities in the left mid lung suggestive of atelectasis . The cardiomediastinal silhouette is within normal limits . Median sternotomy wires and mediastinal clips again noted .
    OUTPUT:
    
No acute cardiopulmonary process .