Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post right upper lobe resection . The right hilum appears enlarged and abnormally dense compared to the left , but is without change . Immediately lateral to the right hilum is a new area of poorly defined opacity approximately at right eighth posterior rib level . Lungs are otherwise remarkable for a persistent area of poorly defined opacity anteriorly in the right middle lobe projecting in the retrosternal area on the lateral view , and corresponding to an area of apparent scarring on ___ chest CTA . Cardiomediastinal contours are unchanged . Small pleural effusions have resolved since the prior study .
    OUTPUT:
    
New poorly defined right juxta -hilar opacity , possibly due to an early / focal pneumonia given clinical suspicion for pneumonia . However , recurrent malignancy is an additional consideration , particularly considering adjacent persistent enlargement and increased density of the right hilum . Management recommendation for this finding is treatment for pneumonia with short - term followup radiographs . However , as there is reportedly also a potential clinical concern for aortic dissection , an immediate chest CTA should be considered as a CXR is not sufficiently sensitive or specific for detecting or excluding this diagnosis .