Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , no significant interval change . The central venous catheter projects from the inferior field of view with tip in the right atrium . Lungs are clear without focal consolidation , pleural effusion , or pneumothorax . Incidentally noted aortic nipple is unchanged . Left upper extremity graft is partially visualized , along with right upper extremity densely calcified graft or vascular calcifications .
    OUTPUT:
    
No new focal consolidation concerning for pneumonia . No significant change since ___ .