Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are normal . There are low lung volumes . Small right and large left pleural effusions are associated with adjacent atelectasis , grossly unchanged from prior study allowing the difference in positioning of the patient . There is no pneumothorax . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No bilateral pleural effusions larger on the left side associated with adjacent consolidations likely atelectasis , superimposed infection can not be totally excluded