Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are relatively hyperinflated , suggesting chronic obstructive pulmonary disease . There is right middle lobe atelectasis / scarring . Biapical pleural thickening is seen . There are patchy areas of opacity projecting over the right middle lobe and to a lesser extent , right upper lung . No pleural effusion or pneumothorax is seen . The cardiac silhouette is not enlarged . The aorta , mediastinal contours are unremarkable .
    OUTPUT:
    
Right middle lobe opacity worrisome for pneumonia . Alternatively , it could be due to aspiration . Additional subtle areas of opacity over the right upper lobe could be chronic changes or additional site of infection / aspiration .