Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Partially visualized fusion hardware is noted in the lower C - spine . The heart appears mildly enlarged . Lungs are clear . No large effusion or pneumothorax . No convincing evidence for pneumonia . Mediastinal contour appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly , otherwise unremarkable .