Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are probably unchanged allowing for differences in technique . There are patchy basilar opacities that can probably be attributed to atelectasis at the lung bases . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
No definite acute cardiopulmonary process on limited examination . If there is continued clinical concern for pneumonia or aspiration , short - term follow - up radiographs are suggested , preferably with standard PA and lateral technique if feasible .