Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA upright and lateral chest radiographs demonstrate well - expanded lungs . Heart is top normal in size and cardiomediastinal contour is unremarkable . Again seen are linear opacities at the right lung base with streaky opacities also seen in the retrocardiac region on the lateral view which could reflect atelectasis , scarring , or infection . Increased density in the inferolateral aspect of the right lung and potentially posterior aspect of the left lung could relate to pleural thickening . There is no pleural effusion and no pneumothorax . Again , note is made of sternotomy wires and a pacemaker with leads in appropriate position .
    OUTPUT:
    
1 . Pleural thickening along the lateral aspect of the right lung and posterior left lung with underlying streaky opacities at the right base could reflect scarring , atelectasis or infection in the appropriate clinical setting . 2 . If there is no prior film for comparison to document stability of these findings , CT is recommended for further evaluation non-urgently .