Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dialysis catheter terminates in the right atrium but has been perhaps retracted slightly . The cardiac , mediastinal and hilar contours appear stable including moderate cardiomegaly . There is no trace pleural effusions are suspected . Streaky retrocardiac opacity suggests atelectasis . The lungs appear otherwise clear .
    OUTPUT:
    
Perhaps slight retraction of dialysis catheter . No evidence of acute cardiopulmonary disease . Stable cardiomegaly .