Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were obtained . A left dialysis catheter terminates in the right atrium . Moderate cardiomegaly and pulmonary artery enlargement are chronic . Lungs are clear . There is no pulmonary edema . No pneumothorax or pleural effusions .
    OUTPUT:
    
No evidence of pneumonia .