Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval removal of the left - sided chest tube . The right PICC tip projects in the mid SVC . No significant change in the known bilateral pleural effusions . There is a small residual left apical pneumothorax . Bibasilar opacities correlate with findings on the recent chest CT .
    OUTPUT:
    
1 . Persistent small apical left pneumothorax . 2 . Bibasilar opacities correlate with findings on the recent chest CT , concerning for underlying pneumonia .