Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for changes in positioning , the small to moderate right apical pneumothorax may be slightly larger . Right base opacification is improved compared with earlier on the same day , making infectious etiologies very unlikely . There may be small bilateral pleural effusions . There is no focal consolidation or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . Allowing for changes in positioning , the small to moderate right apical pneumothorax may be slightly larger . 2 . Improved right base opacification , compatible with resolving atelectasis .