Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Equivocal tiny left apical pneumothorax is seen . There is persistent left upper lobe collapse . Further opacification of the left lung may reflect an increase in atelectasis given the associated volume loss , with a pleural effusion . A more rounded area of lucency within the left upper lung is new on this study . The right lung is essentially clear . The cardiac silhouette is unchanged and the mediastinal contours are normal .
    OUTPUT:
    
1 . Equivocal tiny left apical pneumothorax versus artifact from the Luftsichel sign . Continued surveillance is recommended . 2 . Lucency within the left mid lung may represent a necrotic , air - filled mass . The findings could be further evaluated with a lateral view . 3 . Increased opacification of the left lung may reflect further collapse in the left lung and / or a pleural effusion . These findings were discussed with Dr . ___ by Dr . ___ at 15 : on ___ by telephone at the time of discovery .