Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged with a left ventricular configuration . There is mild - to - moderate unfolding of the thoracic aorta . Right perihilar opacification with volume loss in the right upper lobe as well as a mildly convex contour to the right upper mediastinal contour appear generally similar . The only apparent change is a mild increase in patchy perihilar opacification on the right , probably due to minor atelectasis or treatment effect . There is persistent volume loss at the right lung base with patchy medial basilar opacity suggesting minor atelectasis associated with prominent right - sided epicardial fat pad . There is a very small pleural effusion on the right , not significantly changed versus . pleural thickening . No pneumothorax is identified or pleural effusion on the left side .
    OUTPUT:
    
No definite evidence of acute disease . Mild apparent increased in right suprahilar opacification , which suggests atelectasis or treatment - related changes ; however attention in follow - up cross sectional imaging surveillance studies is recommended .