Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Overall , there has been no significant interval change from the most recent prior study of ___ . Right perihilar opacity persists , corresponding to soft tissue concerning for recurrent malignancy on prior CTA of the chest . Linear opacities in the right lung apex with opacification of the right paratracheal stripe may represent right upper lobe collapse and / or radiation changes . There is no significant pleural effusion or pneumothorax . The cardiac silhouette is incompletely evaluated due to low lung volumes . The mediastinal contours are prominent , related in part to unfolding of the thoracic aorta and right lung opacities . The cardiomediastinal silhouette appears stable from the prior study .
    OUTPUT:
    
Overall , stable appearance of the chest with right perihilar and upper lobe opacities reflecting radiation fibrosis and / or tumor recurrence . Possible small left lower lobe pneumonia .