Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Posterior right lower lobe opacity again may relate to the patient 's known diagnosis of lung cancer ; however , aside from the prior radiograph from ___ , no other studies or cross - sectional imaging is available for comparison . Additional scarring / opacity is seen along the right mid - to - lower lateral chest , again overall similar to the prior exam . Trace blunting of the costophrenic angles bilaterally may be secondary to small bilateral pleural effusions , again similar to the prior exam . No pneumothorax is seen . The heart shadow is top normal . The aorta is tortuous . Again seen are partially imaged bilateral shoulder arthroplasties .
    OUTPUT:
    
Again seen is a large right lower lobe opacity measuring up to 7 .6 cm , likely corresponding to patient 's known lung cancer . Please correlate with prior cross - sectional imaging .