Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderately displaced mid sternal fracture with posterior displacement of the inferior fracture fragment . There is no pneumothorax or pleural effusion . No displaced rib fracture is seen . There is no focal consolidation or pulmonary edema . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Moderately displaced mid sternal fracture without substernal hematoma , pneumothorax , or pleural effusion .