Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy and probably coronary artery bypass graft surgery . The heart is normal in size . The aorta is calcified and mildly tortuous . There is no pleural effusion or pneumothorax . Fissures are mildly thickening suggesting a slight state of fluid overload . However there is no evidence for parenchymal edema . Minimal opacification at the lung bases suggests minor atelectasis or perhaps chronic change . The bones appear demineralized .
    OUTPUT:
    
No convincing findings for acute cardiopulmonary disease .