Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from earlier the same day at 2 :02 p .m . When compared to prior , there has been interval placement of a pigtail catheter at the left lung base with interval decrease in size of the left - sided pleural effusion . There is a small left - sided apical pneumothorax identified . Persistent patchy opacity is seen in the lungs bilaterally , similar in distribution and degree when compared to prior . Cardiomediastinal silhouette is stable as are the osseous and soft tissue structures .
    OUTPUT:
    
Interval placement of left pigtail catheter with decrease in size of left pleural effusion . Small left apical pneumothorax .