Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral atelectasis is mild . An approximately 2 .6 x 2 .1 - cm lobulated opacity projecting over the left apex is new since ___ and has a mass - like appearance . No pleural effusion , pneumothorax , or edema . The heart is top - normal in size , unchanged . No acute osseous abnormality . Biapical pleural thickening is worse on the left .
    OUTPUT:
    
New 2 .6 - cm lobulated opacity projecting over the left apex since ___ could be an underlying mass . Chest CT non-emergent is recommended to further evaluate left apex lobulated mass in setting of reported history of a right breast mass .