Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs are essentially clear noting minimal streaky left basilar opacity . Elsewhere the lungs are clear . There is no effusion . The cardiomediastinal silhouette is normal . No acute osseous abnormalities detected .
    OUTPUT:
    
Lingular opacity potentially due atelectasis noting that infection could also be considered in the appropriate clinical setting .