Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is clearly noted . There is no acute osseous abnormality .
    OUTPUT:
    
Mild cardiomegaly without acute cardiopulmonary abnormality .