Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a 17 mm left apical pneumothorax , previously 21 mm on the outside hospital chest x-ray performed 3 hours earlier . No evidence of tension . Right lung is clear . No evidence of pulmonary edema or pneumonia . Cardiomediastinal silhouette is within normal limits . Acute fractures are re-demonstrated in the left fourth and fifth ribs .
    OUTPUT:
    
1 . Stable to slightly improved left apical pneumothorax without evidence of tension . 2 . Acute fractures of the left fourth and fifth ribs .