Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a in 8 mm rounded nodular opacity projecting over the left mid to upper lung overlying the left sixth rib , not clearly seen on the prior chest radiograph . A CT is needed to further assess . Lungs are otherwise clear without focal consolidation , large effusion or pneumothorax . The cardiomediastinal silhouette appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
8 mm nodule projecting over the left upper lung requires further evaluation by chest CT .