Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a round 5 .6 cm density along the left lung base anteriorly and is likely pleural based . There is loss of the cortical margins of the anterior left sixth rib adjacent to this mass which is worrisome underlying osseous destruction . No focal consolidation , pleural effusion or pulmonary edema is seen . The heart is normal in size . There is an abnormal contour seen just superior to the aortic arch not clearly localized on the lateral view worrisome for underlying abnormality , potentially adenopathy .
    OUTPUT:
    
5 .6 cm round density at the left anterior lung base with probable associated destruction of the anterolateral left sixth rib raising concern for aggressive lesion . Recommend chest CT for further evaluation . Abnormal contour just superior to the aortic arch which can also be followed up at time of CT scan .