Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a 1 cm nodular opacity in the left mid lung ( between the ___ and ___ anterior rib levels ) , which is new since ___ . It has a slightly branching configuration and is smoothly marginated . It is located just above a level of chronic linear scarring at a site of prior pneumonia . There is blunting of the left costophrenic angle , consistent with pleural thickening secondary to previous parapneumonic effusion in this area . The Cardiomediastinal silhouette is normal in size with left ventricular configuration . Post - CABG changes are stable since the prior exam . The osseous structures were unremarkable .
    OUTPUT:
    
1 cm nodular opacity in the left mid lung . Recommend dedicated CT scan of the chest for confirmation and better characterization of this finding . Differential diagnosis includes a small AVM , impacted bronchus , and primary pulmonary neoplasm . The above information was entered into the online critical findings system on ___ .