Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged with the heart size appearing top normal . Focal contour abnormality at the level of the aortic arch corresponds to the known pseudoaneurysm which was better depicted on the previous CT . Calcified hilar lymph nodes are re- demonstrated . Architectural distortion with traction bronchiectasis and fibrotic changes are noted in both upper lobes , right greater than left , likely related to prior granulomatous infection . Patchy opacity in the right lower lobe peripherally was present on the prior CT , and again may reflect an area of infection . Patchy retrocardiac opacity may reflect atelectasis , but infection is not excluded , and there are small bilateral pleural effusions . No pulmonary edema or pneumothorax is detected .
    OUTPUT:
    
Chronic changes with architectural distortion most pronounced in the upper lobes compatible with prior granulomatous disease . Small bilateral pleural effusions , unchanged . Right basilar patchy opacity was seen on the recent chest CT , and may reflect an area of infection . Retrocardiac opacity could reflect atelectasis though infection is also not excluded .