Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Cardiomediastinal silhouette and hilar contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax . There is possible cortical irregularity of the lateral left ___ and 7th ribs .
    OUTPUT:
    
No acute cardiopulmonary process . Possible nondisplaced fractures of the lateral left ___ and 7th ribs , dedicated rib series can be obtained if desired . No pneumothorax based on this supine film .