Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is unchanged . Lung volumes are slightly low . Bilateral hazy opacities likely reflect mild pulmonary edema . There is no definite evidence of pneumonia . Median sternotomy wires are grossly intact . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Stable cardiomegaly with mild pulmonary edema .