Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new small apical pneumothorax , status post removal of left chest tube . Left hilar opacity represents known mass as seen on CT . Retrocardiac opacity likely represents moderate atelectasis and left pleural effusion . Right lung is clear without pleural effusion or pneumothorax . No pulmonary edema . The heart size and mediastinal contour are normal . No bony abnormality .
    OUTPUT:
    
1 . New small apical left pneumothorax status post removal of left chest tube . 2 . Left hilar mass as seen on CT , ___ . 3 . Partial left lower lobe atelectasis and small left pleural effusion . Results were conveyed via telephone to Dr . ___ at 11 : 10 a .m . by Dr . ___ on ___ , within 10 minutes of results .