Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is rotated somewhat to the right . There are low lung volumes . There may be mild pulmonary vascular congestion . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The patient is status post median sternotomy . The cardiac and mediastinal silhouettes are grossly stable . Chronic deformities of the shoulders are again seen .
    OUTPUT:
    
Low lung volumes with possible mild vascular congestion .