Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrates top normal heart size . There is persistent small left apical pneumothorax , decreased compared to the prior study . The left - sided chest tube remains in place . The cardiomediastinal silhouette and hilar contours are normal . Again seen is a small round right lower lung zone opacity corresponding to the nodule seen on outside PET - CT . There is no change in left pleural effusion with associated compressive atelectasis .
    OUTPUT:
    
1 . Decreased size of left apical pneumothorax . 2 . Persistent left pleural effusion with basilar atelectasis .