Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pacemaker is unchanged in position . Aortic arch calcifications are re - demonstrated . Right juxta hilar opacity , which could be projectional due to lordotic positioning , but is infection can not be excluded . Cardiomediastinal silhouette is largely unchanged . A supradiaphragmatic descending aortic aneurysm appears unchanged . Left basilar pleural parenchymal scarring is unchanged . Note is made of prior right mastectomy and axillary lymph node dissection ; diffuse skeletal metastases are again demonstrated
    OUTPUT:
    
Right infrahilar opacity is potentially due to accentuation of pericardial fat pad by lordotic projection , of a localized region of atelectasis or infectious consolidation could have a similar radiographic appearance .