Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate a left chest port , a catheter tip which projects at or just below the anticipated location of the cavoatrial junction . Relative to prior radiograph , opacification of the right upper lung zone is unchanged . Hilar contours are stable . Patient is status post tumor treatment at the right hilus , better demonstrated on recent CT performed ___ . Elevation of the right hemidiaphragm is stable . Obscuration of the left costophrenic angle may reflect a small pleural effusion . Linear opacity at the left lung base is likely sequela of atelectasis . No focal opacity convincing for pneumonia is identified . Cardiomediastinal and hilar contours are unchanged . Osseous structures and imaged upper abdomen or without an acute abnormality .
    OUTPUT:
    
Left basilar opacity likely secondary to atelectasis and probable small pleural effusion . Otherwise overall stable appearance of the chest status post treatment of right hilar mass .