Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The triangular opacity at the left base is unchanged compared to ___ , and likely represents scarring or atelectasis . No focal consolidations to suggest pneumonia . No pulmonary edema . Stable appearance of the cardiomediastinal silhouette . No pleural effusion . No pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .