Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate clear lungs bilaterally . Cardiomediastinal and hilar contours are stable in appearance an within normal limits . There is no pleural effusion or pneumothorax . No evidence of pulmonary edema . Irregularity involving the lateral aspects of the ninth and tenth right ribs appears to have been present on examination dated ___ and suggests chronic fractures .
    OUTPUT:
    
No acute intrathoracic abnormality .