Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is borderline enlarged . Mediastinal and hilar contours are within normal limits . Lungs are clear and the pulmonary vascularity is within normal limits . There is no pleural effusion or pneumothorax . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .