Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal in the lungs are clear . No pleural effusion or pneumothorax is present . Cortical irregularity involving the right seventh lateral rib may reflect a nondisplaced fracture .
    OUTPUT:
    
Cortical irregularity involving the right seventh lateral rib may reflect a nondisplaced fracture . No acute cardiopulmonary abnormality .