Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again re - demonstrated is severe kyphosis with multiple compression deformities in the thoracic spine , which limits assessment . The cardiac , mediastinal and hilar contours appear relatively unchanged , with the heart size appearing mildly enlarged . Previous pattern of mild pulmonary edema has improved . Small bilateral pleural effusions persist , with interval decrease in size of the right pleural effusion . No pneumothorax is identified .
    OUTPUT:
    
Limited exam . Interval improvement in previous pattern of mild pulmonary edema and decreased size of small right pleural effusion . Persistent trace left pleural effusion .