FINDINGS:
The lungs are clear without focal consolidation.  No pleural effusion or
 pneumothorax is seen. The cardiac and mediastinal silhouettes are stable. The
 previously described linear thin density projecting over the right side of the
 heart just inferior to the right mainstem bronchus on the prior study is not
 seen on the current study and may have been external to the patient. .

IMPRESSION:
Previously seen linear density projecting just inferior to the right mainstem
 bronchus is no longer seen and may have been external to the patient.