Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy and aortic valve replacement . The heart is mildly enlarged with a left ventricular configuration . There is no discrete focal opacity but fissures are thickened with a mild interstitial abnormality and pulmonary vascular indistinctness , suggesting mild pulmonary edema . Opacification of posterior costophrenic sulci suggests small pleural effusions and perhaps coinciding atelectasis .
    OUTPUT:
    
Findings suggesting mild vascular congestion , somewhat worse than before , with small suspected pleural effusions .