Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires and mitral valve replacement noted . Bilateral pleural effusions are stable on the right and decreased on the left , overall small in size . There is bibasilar atelectasis , likely compressive . The mid - to - upper lungs appear well aerated without evidence of pulmonary edema . The heart size is top normal . Mediastinal contour is unremarkable . Bony structures are intact .
    OUTPUT:
    
Small bilateral pleural effusions , stable on the right and diminished on the left with associated bibasilar compressive atelectasis .