FINDINGS:
Fracture of the left sixth rib is again seen.  There is a small
 residual left apical pneumothorax.
 Overall, there is minimal change from prior exam.  Cardiomediastinal
 silhouette is stable.  No large effusion is seen.

IMPRESSION:
Small left pneumothorax, minimally increased from prior exam. 
 Left sixth rib fracture redemonstrated.