Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest . Bilateral effusions , moderate on the left and small on the right have increased from prior . Left lower lobe opacity more likely atelectasis than pneumonia . Unchanged right upper lobe granuloma . Stable mediastinal and hilar contours and heart size .
    OUTPUT:
    
1 . Left lower lobe opacity more likely atelectasis than pneumonia . 2 . Moderate left and small right pleural effusions increased from prior study .