Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are unremarkable . There is an opacity at the right lower lobe , without a definite correlate on the lateral radiographs . This is likely secondary to atelectasis , however an acute infection can not be ruled out . There is no pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
New opacity at the right lower lobe likely secondary to atelectasis , however an acute infection can not be excluded . Findings were discussed with Dr . ___ by Dr . ___ by telephone at 5p on the day of the exam .