Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided Port - A - Cath ends at the cavoatrial junction . Left lower lobe opacity is new since ___ and may represent infection or atelectasis . Mild interstitial prominence in the lower lungs suggests mild cascular congestion . There is no pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal . Spinal fusion hardware and abdominal clips are identified .
    OUTPUT:
    
Left lower lobe opacity consistent with atelectasis or infection . Mild pulmonary vascular congestion .