Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . The lungs appear clear . Small osteophytes are present along the mid - to - lower thoracic spine .
    OUTPUT:
    
Mild cardiomegaly . No evidence of acute disease .