Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion or pneumothorax . Cardiomediastinal silhouette is within normal limits . Cortical irregularity along the mid clavicular shaft on the left likely represents an old fracture . No radiographic evidence of an acute fracture .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . If there is clinical concern for a rib fracture , dedicated rib series should be considered .