Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Improved bilateral perihilar , bibasilar opacities . Probable tiny bilateral pleural effusions . Increased heart size , pulmonary vascularity , improved . Postoperative changes thoracolumbar spine , with hardware in place . Lucency between pedicular screw and bone at T10 , stable , suggests loosening follow - up recommended . Stable mild compression fracture lower thoracic spine since ___ . Thoracic kyphosis .
    OUTPUT:
    
Significant improvement since prior