Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The hila are normal . The pulmonary vasculatures are normal and unchanged . There is bilateral pleural effusion , right greater than left . The heart size is slightly enlarged compared to prior . No pneumothorax . No fractures . Subcutaneous emphysema in the mid back is appreciated on lateral view .
    OUTPUT:
    
Bilateral pleural effusion , greater on the right but no pulmonary edema .