Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Port - A - Cath terminating in the upper part of the superior vena cava appears unchanged since the more recent of the prior two studies . The patient is status post sternotomy . A calcified prevascular lymph node appears unchanged . The cardiac , mediastinal and hilar contours appear stable . The lung volumes are low . Streaky basilar opacity consistent with minor scarring is similar in the lingula . There is no substantial parenchymal opacity .
    OUTPUT:
    
No evidence of acute disease .