Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New opacity in the right middle lobe and lower lobes could represent post - surgical scarring ; however , an acute process including infection and aspiration can not be excluded . The right costophrenic angle is blunted , which could represent a small pleural effusion . The left lung and the left costophrenic angle are clear . Intact median sternotomy wires are redemonstrated as well as left mediastinal clips . The aorta is calcified . The heart size is normal . The previously seen pneumoperitoneum and subcutaneous emphysema have resolved .
    OUTPUT:
    
New opacity in the right middle and lower lobes may represent scarring from the patient 's prior esophagectomy , infection and / or aspiration . Small right pleural effusion .