Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are nondisplaced fractures of the left posterolateral sixth and seventh ribs with an equivocal nondisplaced fifth rib fracture . Minimal pleural thickening is noted at each lung apex . The lungs appear otherwise clear . There is no evidence for pleural effusion or pneumothorax .
    OUTPUT:
    
Left - sided rib fractures .