Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy with CABG . Sternotomy wires are intact and aligned . Left basilar subsegmental atelectasis is unchanged . There is no new consolidation , pleural effusion or pneumothorax . The right lung remains clear . Mild cardiomegaly despite the projection is stable .
    OUTPUT:
    
Stable left basilar subsegmental atelectasis with otherwise clear lungs . No evidence of pneumonia .