Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Poor positioning and lung hypoinflation causing vascular crowding limit radiographic assessment . Allowing for these limitations , ill - defined opacities are noted in both lung bases . In the right these opcities are superimposed to areas of costochondral calcification making assessment difficult . A band - like opacity is noted transversing the right apex vertically with some surgical clips projecting over this opacity , which is unchanged compared with prior exam and likely represents a band of pulmonary scarring or pleural thickening . No other focal opacities are seen . Small bilateral pleural effusions are present , right greater than left . The cardiac silhouette is mildly enlarged . The mediastinal and hilar contours are not significantly changed compared with prior study . The aorta is tortuous and calcifications are again seen in the aortic knob . There is no pneumothorax . Sternotomy wires are intact . Clips from CABG are noted . A right - sided mid line catheter is noted ending approximately at the level of the right shoulder . Severe degenerative changes of the right shoulder are chronic as well as a prosthetic left shoulder .
    OUTPUT:
    
Limited exam . Ill defined bibasilar opacities associated with a small bilateral pleural effusions might represent atelectasis , though an infectious process can not be excluded .