Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed . Compared to the most recent prior study , the left pleural effusion has markedly decreased and there is improved expansion in the left lung with residual opacity likely representing re-expansion edema and basilar atelectasis . A chest tube enters the left lower hemithorax and there is a small left apical pneumothorax . A small right pleural effusion and right basilar atelectas are unchanged . No right pneumothorax . Cardiac and mediastinal contours are stable .
    OUTPUT:
    
1 . Small left apical pneumothorax . 2 . Marked decrease in small left pleural effusion .