Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires are again noted . Hilar congestion is noted with mild pulmonary edema . There is slightly increased opacity in the lower lungs which raises potential concern for atelectasis versus an early pneumonia . No large effusion or pneumothorax . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
Mild pulmonary vascular congestion and edema . Lower lung subtle opacities may reflect atelectasis though difficult to exclude an early pneumonia .