Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A linear opacity in the right mid lung projecting over the heart on the lateral view likely represents an area of subsegmental atelectasis . The remainder of the lungs are clear . There is no confluent consolidation to suggest pneumonia . There is no vascular congestion , edema or large pleural effusions . Cardiomediastinal and hilar contours are within normal limits .
    OUTPUT:
    
Subsegmental atelectasis in the right mid lung , though no confluent consolidation to suggest pneumonia .