Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left chest wall central line terminates in the right atrium . There is no pneumothorax . Lung volumes are extremely low . Prominence of the interstitial markings is likely due to mild pulmonary edema . The cardiac silhouette is enlarged as seen previously . There are no appreciable pleural effusions . Degenerative changes are noted within the right humeral head .
    OUTPUT:
    
No evidence of pneumothorax . No significant change since the prior exam .