Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right suprahilar opacity with its fiducial marker is stable for at least two months . Small bilateral pleural abnormalities and a large region of rounded atelectasis in the left lower lobe are also unchanged . Heart size , and mediastinal and pulmonary vascularity are normal and there is no edema . Pacemaker leads are in unchanged positions , intact .
    OUTPUT:
    
Stable , treated right lung malignancy . No evidence of congestive heart failure or other acute abnormality .