Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate multiple intact sternotomy wires and a mitral valve replacement . Moderate bilateral pleural effusions are persistent , right greater than left , but minimally decreased . Bibasilar associated atelectasis is unchanged . The upper lungs are clear . The heart size remains normal .
    OUTPUT:
    
Minimally decreased moderate bilateral pleural effusions , right greater than left , with associated atelectasis .