Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears again mildly enlarged . The mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The interstitium appears prominent to a similar extent including mild upper zone distribution of pulmonary vascularity . There is no focal opacity , however .
    OUTPUT:
    
No findings suggestive of pneumonia . Mild interstitial abnormality , although not necessarily , if at all , different from baseline findings .