FINDINGS:
Heart size is top normal.  Cardiomediastinal silhouette is unremarkable. 
 Hilar contour is normal.  A pacemaker is implanted in the left upper chest
 with right atrial and right ventricular leads.  Lungs are clear without focal
 consolidation, effusion or pneumothorax.  No acute bony abnormality is
 identified.

IMPRESSION:
No acute intrathoracic process.