Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . The lungs are well expanded and clear without focal consolidation concerning for pneumonia . Mild lingular opacity continues to improve . There has been interval healing of left upper lateral rib fractures . A fixation device with screws is seen traversing the left clavicular fracture . Subcutaneous left chest wall gas is resolved . The upper abdomen is unremarkable .
    OUTPUT:
    
Interval healing of left rib fractures with improvement in lingular opacity , consistent with resolving contusion .