Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph from ___ , there are new bibasilar opacities which could reflect pneumonia or aspiration in the appropriate clinical circumstance . Atelectasis is also a possible explanation for the basilar opacities . No upper lobe consolidation is identified . There is no pneumothorax . No pulmonary edema or large pleural effusions are evident . Mediastinal and hilar contours are within normal limits . Mild cardiomegaly is unchanged .
    OUTPUT:
    
1 . New bibasilar opacities may reflect aspiration or pneumonia , though atelectasis is also possible . 2 . Unchanged mild cardiomegaly