Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate the lungs are well expanded and clear . The cardiomediastinal silhouette is unchanged , with a tortuous thoracic aorta . The cardiac size is within normal limits . No pleural effusion , pulmonary edema , pneumothorax , or focal consolidation is seen .
    OUTPUT:
    
No acute cardiopulmonary process .