Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . Linear opacities at the lung bases are most suggestive of atelectasis as they are not seen on the lateral view . Lungs are otherwise clear and there is no effusion . The cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .