Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal opacity within the left lung apex corresponds with a pleural - based lesion seen on prior CT . There is borderline upper zone redistribution and bibasilar atelectasis . No overt chf , focal consolidation , effusion , or pneumothorax . Cardiomediastinal and hilar contours are within normal limits . There is tracheal deviation to the right secondary to a large mass in the left thyroid gland as seen on concurrent CT . Multiple healed right - sided rib fractures are noted .
    OUTPUT:
    
1 . Apical opacity in the left upper lobe corresponding with pleural - based mass on current CT . Please see CT report for details . 2 . Right tracheal deviation secondary to known left thyroid mass .