Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky opacities at the left lung base most likely represents atelectasis . There is otherwise no focal consolidation , pleural effusion or pneumothorax . No pulmonary edema . Cardiomediastinal silhouette is normal . No acute osseous abnormalities . No subdiaphragmatic free air .
    OUTPUT:
    
No acute cardiopulmonary process .