Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dialysis catheter noted and unchanged . The heart is moderately enlarged . There is extensive calcification of the thoracic aorta . Calcifications are also noted in the walls of the coronary arteries and the main bronchi . Cardiomediastinal contours are unremarkable . Lungs are clear with no evidence of focal consolidation to suggest acute pneumonia . No pleural effusions . No pneumothorax .
    OUTPUT:
    
No evidence of acute pneumonia .