Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low . There is mild interstitial edema and pulmonary vascular congestion . No focal consolidation is present . There is moderate cardiomegaly , as before . No pleural effusion or pneumothorax is seen . A left chest AICD is in unchanged positions . Median sternotomy wires and surgical clips are again noted .
    OUTPUT:
    
Moderate cardiomegaly with mild interstitial edema . No focal consolidation to suggest the presence of pneumonia .