Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Right hilar opacity is compatible with known mass and radiation treatment changes . Previously noted right upper lobe atelectasis has improved though is still present . Small right pleural effusion persists . Left lung is clear . There is no pulmonary edema . No pneumothorax is demonstrated . Mild degenerative changes are noted in the thoracic spine . The patient is status post tracheostomy .
    OUTPUT:
    
Right perihilar opacity compatible with known mass and radiation treatment changes . Previously demonstrated right upper lobe atelectasis is improved but persists . Small right pleural effusion .