Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Within the limitations in technique , aside from calcification along the aortic arch , the cardiac and mediastinal contours appear within normal limits . There is perhaps slight atelectasis at the left lung base . The interstitium is mildly prominent . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Interstitial prominence , suggesting slight fluid overload , not striking .