Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are intact and aligned . Lung volumes are low , but right mid to lower lung airspace opacities may be due to infection or atelectasis . A left basilar retrocardiac airspace opacity may also be due to atelectasis or infection . The patient 's chin and overlying soft tissues partially obscure the lung apices . But there is no obvious pneumothorax . Cardiomegaly despite the projection is unchanged .
    OUTPUT:
    
New right mid to lower lung airspace opacities may be due to infection or atelectasis . Stable left basilar infection or atelectasis . No pneumothorax . Stable cardiomegaly .