Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are intact . Low lung volumes with mild bibasilar atelectasis , left greater than right and small bilateral pleural effusions . Interval decrease in vascular congestion . Aortic valve replacement noted . No pneumothorax , pulmonary edema , or new focal opacity . Heart size is top normal with normal mediastinal contour and hila . No bony abnormalities .
    OUTPUT:
    
Mild bibasilar atelectasis , left greater than right with small bilateral pleural effusions . No pneumothorax .