Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , I doubt significant interval change . The cardiomediastinal silhouette is within normal limits . No CHF , focal infiltrate , effusion , or pneumothorax is detected . Minimal linear atelectasis is noted at the left lung base . No free air seen beneath the diaphragms . No rib fracture is identified on these lung technique films .
    OUTPUT:
    
No acute pulmonary process identified .