Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate no interval change from ___ . Small right pleural effusion , adjacent atelectasis , and scar formation are stable . The cardiomediastinal silhouette is normal . The left hemithorax is unremarkable .
    OUTPUT:
    
Stable small right pleural effusion compared to ___ . This study neither suggests nor excludes the diagnosis of pulmonary embolism .