Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires again noted . There is no focal consolidation , effusion , or pneumothorax . The heart remains mildly enlarged . Mediastinal contour is stable . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .