Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are in place appearing intact with revisualization of aortic valve and mitral valve replacement . Moderate cardiomegaly with mild thoracic aortic unfolding is unchanged . Interstitial pulmonary edema has improved , now mild . Small pleural effusions are noted bilaterally . There is no pleural effusion .
    OUTPUT:
    
Improving interstitial pulmonary edema , now mild , with persistent small bilateral pleural effusions .