FINDINGS:
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.

IMPRESSION:
No evidence of pneumothorax.  No significant change since the
 prior exam.