Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right pigtail chest tube is unchanged . No pneumothorax . The right lower lobe atelectasis is unchanged . The right apical fluid collection has improved slightly . The left lung is clear . The right upper lobe opacification abutting the minor fissure is concerning for pneumonia in the appropriate clinical setting . No pleural effusion . The mediastinal silhouette is normal . Right first rib resection with postsurgical changes is stable .
    OUTPUT:
    
1 . Slightly improved right apical fluid collection . 2 . The right upper lobe opacification abutting the minor fissure is concerning for pneumonia in the appropriate clinical setting .