Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heterogeneous right upper lobe opacities are increased , first appearing on the postoperative radiograph from ___ , likely a combination of postoperative hematoma / atelectasis and developing infection . Additionally , there are increased right lower lung heterogeneous opacities , likely atelectasis . Mild - to - moderate left retrocardiac atelectasis is not significantly changed . A small left pleural effusion is unchanged . There is no pneumothorax . The heart size and mediastinal contours are normal .
    OUTPUT:
    
1 . Findings concerning for developing right upper lobe pneumonia . 2 . Increased right lower lung atelectasis . 3 . Unchanged mild - to - moderate left retrocardiac atelectasis and small left pleural effusion . Findings were discussed with Dr . ___ by Dr . ___ at 9 :34 a .m . via telephone on the day of the study , directly after discovery of the finding .