Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . Multiple old left - sided rib fractures are again seen , involving at least the left third , fourth and seventh ribs . No evidence of pneumothorax is seen . There is no focal consolidation . No large pleural effusion is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
No acute cardiopulmonary process , specifically , no evidence of pneumothorax . Multiple old left - sided rib fractures again seen .