Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . There is mild pulmonary vascular congestion with an interstitial abnormality , which may be consistent with pulmonary edema . There is mild bibasilar atelectasis . There is no pleural effusion or pneumothorax . Compression deformity of the mid thoracic vertebral body is unchanged compared to the prior exam .
    OUTPUT:
    
Mild bilateral interstitial abnormality , which may be secondary to pulmonary edema .