Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Rounded opacity within the right lower lobe measuring 2 .2 x 3 .0 cm is compatible with a saccular bronchial aneurysm , better assessed on the previous CT , and slightly decreased in size compared to the previous radiograph when it measured 2 .9 x 3 .4 cm . Previously noted small right pleural effusion has almost completely resolved . Aeration of the right lung base is also improved with minimal streaky opacity likely reflective of improving pneumonia . No new focal consolidation or pneumothorax is present . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
Decreased size of right lower lobe rounded opacity correlating to the saccular bronchial aneurysm as seen on the previous CT . Improved aeration of the right lung base compatible with improving pneumonia and near complete resolution of the previously noted small right pleural effusion .