Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small bilateral pleural effusions persist . Bilateral interstitial abnormality appears unchanged compared to most recent prior exam . Heart and mediastinal contours are stable . There has been interval removal of sternal wires and hardware ; 2 paramedian drains are now seen . There is no mediastinal widening or radiographically apparent mediastinal air .
    OUTPUT:
    
Chronic - appearing interstitial abnormality without radiographic evidence for acute change .