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 ___ . The lungs are clear of confluent consolidation or effusion . Cardiomediastinal silhouette is within normal limits . Osseous structure is again notable for a posterior right fourth and sixth rib fractures . Previously identified right PICC line is no longer visualized .
    OUTPUT:
    
No acute cardiopulmonary process .