Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . There is a linear opacity in the right base , which is new from the prior exam . There is an ill - defined opacity at the left base , which appears mostly stable , and may represent prominent osteophytes . The apices of the lungs are clear . There is no pulmonary edema , pleural effusion , or pneumothorax . The mediastinal contours are normal . The heart size is at the upper limits of normal .
    OUTPUT:
    
Bibasilar opacities , which are likely due to atelectasis , although a developing infiltrate can not be completely excluded . Further evaluation with oblique views is recommended to better characterize the opacities . Recommendations were discussed with Dr . ___ ___ resident ) at 10 AM on ___ via telephone by Dr . ___ .