Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The overall appearance of diffuse bilateral interstitial and airspace opacities is not appreciably changed since ___ . Superimposed right basilar subsegmental atelectasis may be slightly increased . The cardiomediastinal silhouette is stable . There is no pneumothorax . Small bilateral pleural effusions are unchanged .
    OUTPUT:
    
Slightly increased right basilar subsegmental atelectasis with no other significant interval change .