Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The hila and pulmonary vasculature are normal . No pleural effusions or pneumothorax . Mild cardiomegaly is unchanged . Aorta is tortuous . Mediastinal silhouette is otherwise unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .