Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Both lungs are well expanded . A nodular opacity of 7 .6 cm is seen at the left lung base overlapping the anterior end of rib . This nodular opacity can potentially represent either lung nodule or could be artifactual and needs to be further evaluated with repeat frontal chest radiograph with nipple markers and supplemented by shallow oblique views . Right lung is clear . There are on lung opacities concerning for pneumonia . Heart size is top normal , unchanged since prior study from ___ . Mediastinal and hilar contours are stable in appearance .
    OUTPUT:
    
A small 7 .6 - mm nodular opacity in the left lung base overlying the anterior end of sixth rib is concerning for lung nodule , however , could be artifactual or within the bones or could be a nipple . For further evaluation and differentiation , repeat PA radiograph with a nipple markers supplemented by shallow oblique views is recommended . Dr . ___ was paged on ___ at 4 :50 p .m . and the findings were discussed .