FINDINGS:
A cardiac device generator overlies the left hemi thorax. Leads terminate in
 the right atrium, right ventricle, and coronary sinus.
 
 There is a left pneumothorax.  There is no significant mediastinal shift. 
 Layering density overlying the mid and lower left lung may represent contrast
 material within the thoracic cavity.  There is no consolidation.

IMPRESSION:
Left pneumothorax without evidence of mediastinal shift.