Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable semi upright view of the chest . Midline sternotomy wires are noted as well as overlying leads . Patient is slightly rotated limiting assessment . There is no convincing evidence for pneumonia . No large effusion or pneumothorax is seen . No overt edema . The cardiomediastinal silhouette is difficult to assess given rotated and portable technique . Bony structures appear intact .
    OUTPUT:
    
Limited , negative .