Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiographs , there are continued bibasilar opacities , consistent with atelectasis , although pneumonia can not be excluded in the right lung base . Prominent left hilum , consistent with known perihilar non-small - cell lung cancer and lymphadenopathy , is grossly unchanged to slightly smaller . Mild cardiomegaly is also unchanged . Eventration of the right hemidiaphragm is unchanged . No pleural effusions or new focal consolidations . Chronic right eighth rib deformity .
    OUTPUT:
    
Right lung basilar opacity is likely atelectasis , although pneumonia can not be excluded .