Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were compared to previous exam from ___ . Lower lung volumes seen on the frontal exam . Blunting of the left lateral costophrenic angle could be due to atelectasis for this reason . The lungs are otherwise clear and there is no effusion . The cardiomediastinal silhouette is stable as are the osseous and soft tissue structures .
    OUTPUT:
    
No acute cardiopulmonary process .