Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The lungs show no consolidation or overt evidence of pulmonary edema . Retrocardiac opacity medially is compatible with hiatal hernia . Old appearing left upper rib fractures are present . There are also fractures of right upper ribs , including posterior right ___ and 6th ribs , likely old , but not clearly seen on the prior chest radiograph . Correlate clinically for acuity . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process . Fractures of right upper ribs , including posterior right ___ and 6th ribs , likely old , but not clearly seen on the prior chest radiograph . Correlate clinically for acuity .