Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate right - sided pleural effusion . Right upper lobe consolidation is again seen . The left lung is grossly clear besides probable left basilar atelectasis . Cardiac silhouette is enlarged but likely accentuated by AP technique . No acute osseous abnormalities .
    OUTPUT:
    
Right upper lobe opacity compatible with patient 's known underlying mass lesion with possible associated postobstructive infection and moderate right pleural effusion .