Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is streaky retrocardiac opacity which is most likely atelectasis . Left mid lung linear opacity also likely atelectasis versus scarring . Lungs are otherwise clear without confluent consolidation or effusion . The cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .