Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a stable left apical pneumothorax . A left pleural catheter is in unchanged position . There has been interval slight decrease in the left pleural effusion with associated stable atelectasis . The atelectasis at the right base has improved since the most recent prior study . There is no focal consolidation concerning for pneumonia . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
Stable left apical pneumothorax . Slight decrease in left pleural effusion and improvement in right basilar atelectasis .