Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires intact and aligned . Right Port - A - Cath ends at the cavoatrial junction . Interval extubation . New opacity at the right base may reflect aspiration pneumonia or asymmetric pulmonary edema . Left lung is clear . Possible mediastinal widening may reflect venous distension and volume overload . Stable , mild cardiomegaly .
    OUTPUT:
    
New opacity at the right base may reflect aspiration pneumonia or asymmetric pulmonary edema and warrants radiographic follow - up to ensure clearance . Possible , mild volume overload .