Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is unchanged . Right IJ line terminates at the distal SVC . Port - A - Cath tip terminates at the distal SVC . Replaced mitral valve is unchanged in position . No pleural effusion or pneumothorax is seen . Bibasilar atelectasis is unchanged .
    OUTPUT:
    
No evidence of pneumonia or pleural effusions . No significant changes compared to prior study .