Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable including a stent pr prosthesis along the left mainstem bronchus . Surgical clips project over the aortopulmonary window in addition to sternotomy wires . There is no pleural effusion or pneumothorax . The lungs appear clear .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .