Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A central venous catheter terminates in the upper superior vena cava . The heart is normal in size . The mediastinal and hilar contours appear unchanged . There is a new diffuse interstitial abnormality most suggestive of mild pulmonary vascular congestion , although other etiologies including atypical infection could be considered if clinical findings are discordant . Band - like opacity in the left mid lung suggests minor atelectasis or scarring . Posterior costophrenic sulci show mild blunting , so there is potentially a trace pleural effusion on either one or both sides .
    OUTPUT:
    
New mild diffuse interstitial abnormality most suggestive of pulmonary vascular congestion .