Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires are again noted . The lungs remain clear without convincing signs of pneumonia or CHF . No large effusion or pneumothorax is seen . The heart and mediastinal contours remain stable . Bony structures are intact . No free air below the right hemidiaphragm . Metallic clips in the upper abdomen noted .
    OUTPUT:
    
No acute findings .