Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous chest CT from ___ . Right perihilar opacity with fiducial marker is again seen , similar in configuration compared to previous exam and compatible with post-radiation changes . The innumerable bilateral pulmonary nodules are less clearly delineated on this exam than they were on the prior CT scan . Lungs are clear of new consolidation or effusion . Cardiomediastinal silhouette is unchanged . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Post - treatment changes , not significantly changed given differences in technique compared to prior CT from ___ . Known innumerable bilateral pulmonary nodules are not clearly delineated on this chest x-ray .