Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph . Mild interstitial edema is unchanged , but small bilateral pleural effusions have slightly increased in the interim . Median sternotomy wires are intact . There is no pneumothorax . Heart size remains normal .
    OUTPUT:
    
Stable mild interstitial pulmonary edema with slight interval increase in pleural effusions .