Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided chest tube is present . There is a small peripheral pneumothorax seen at the left apex hand along the upper left lung . There is subcutaneous emphysema . A large rounded density lies near the tip of the chest tube , abutting the mediastinum with expected level of the aortic arch . There are focal the somewhat mass - like densities in the left mid lung laterally the abutting the left chest wall . There is some increased density with obscuration of the left hemidiaphragm , as well , consistent with some degree of lower lobe collapse / consolidation . Equivocal minimal leftward mediastinal shift . The right lung volume is slightly low , but there is no evidence of CHF , focal infiltrate or effusion on the right side . No right - sided pneumothorax .
    OUTPUT:
    
Left chest tube overlying left upper lung . Small pneumothorax . Appearance is similar to the film from earlier the same morning .