Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased opacity projects over the left hilum in the suprahilar region , seen posteriorly on the lateral view . Given differences in projection and technique these have not significantly changed . Additional right basilar opacity is slightly more conspicuous on the current exam on the frontal view but not clearly delineated on the lateral . Elsewhere , lungs are clear . Cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
Left perihilar opacity which given differences in positioning has not dramatically changed since prior and is compatible with underlying neoplasm with post treatment changes . Right basilar opacity seen only on the frontal view , potentially atelectasis , to be correlated clinically .