Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and mediastinal clips are again noted . A drain is seen projecting over the right upper quadrant . The lungs are clear without focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette appears normal . No pleural effusion or pneumothorax is seen . There is no free air below the right hemidiaphragm . Bony structures are intact .
    OUTPUT:
    
No evidence of pneumonia .