Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Hilar and mediastinal contours are stable . The lungs are clear without evidence of focal consolidations concerning for infection , definite pleural effusions , or pneumothorax . There is a small linear opacity in the left lower lobe likely secondary to atelectasis . There is an osseous fragment off the inferior lip of the glenoid cavity which appears to be of indeterminate chronicity . There appears to be a rib fracture at the right sixth rib which appears stable compared to the chest x-ray from ___ .
    OUTPUT:
    
No evidence of pulmonary edema or infection .