Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild right lower lobe atelectasis . No focal consolidation , effusion , edema , or pneumothorax . The cardiomediastinal silhouette unchanged . The descending thoracic aorta slightly tortuous and / or ectatic . Right hemidiaphragm is slightly elevated .
    OUTPUT:
    
No acute cardiopulmonary process . Right lower lung atelectasis .