Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a single - lead pacemaker whose lead terminates in the right ventricle , as before . The heart is slightly enlarged . The mediastinal and hilar contours appear unchanged , allowing for differences in technique . Slight blurring of the right hemidiaphragmatic contour may be due to a parenchymal opacity , probably minor atelectasis and it is difficult to exclude a very small pleural effusion .
    OUTPUT:
    
Suspected minor atelectasis at the right lung base , otherwise unremarkable . If symptoms were to persist then standard PA and lateral radiographs could be considered in short - term followup .