Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and mediastinal clips again noted . Suture is again noted in the right lower lung with adjacent rib resection . There is mild scarring in the right lower lung as on prior . There is no focal consolidation , large effusion or pneumothorax . No signs of congestion or edema . The heart remains moderately enlarged . The mediastinal contour is stable .
    OUTPUT:
    
Postsurgical changes in the right hemi thorax . Mild cardiomegaly unchanged . No edema or pneumonia .