Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrates the lungs are well - expanded and clear . The cardiomediastinal silhouette is unchanged since the prior study with stable mild cardiomegaly . There is no evidence of pneumonia , pleural effusion , pulmonary edema or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .