Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The previously seen left - sided pacemaker and associated leads have been removed . There is no pneumothorax . The lungs are clear . Lower lung volumes could account for the slight increase in heart size , now top normal . The mediastinal contours are unchanged . There are no definite pleural effusions .
    OUTPUT:
    
1 . No pneumothorax . 2 . Lower lung volumes may account for slight increase in now top normal heart size . Followup radiographs are recommended , when feasible .