Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The hilar and mediastinal contours are normal . There is a 1 .5 cm right lower lobe nodule which has been present on prior CT scans , most recently from ___ ; a formal chest CT should be performed to evaluate for long - term stability . No focal consolidations concerning for pneumonia are identified . There is no pleural effusion or pneumothorax . No definite rib fractures are seen ; however , a dedicated rib series would be helpful if there is further clinical concern for rib fractures .
    OUTPUT:
    
1 . No acute intrathoracic abnormalities identified . 2 . No definite rib fractures are identified ; however , a dedicated rib series may be helpful if there is further clinical concern . 3 . 1 .5 cm nodule in the right lower lobe has been seen on prior exams including a chest CT most recently from ___ . A formal low dose chest CT would be recommended to evaluate for interval stability and to exclude malignancy .