Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is tortuous . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Bibasilar atelectasis . Lungs are otherwise clear . Small right pleural effusion . No left pleural effusion . No pneumothorax is seen . There are no acute osseous abnormalities . Degenerative changes of the visualized spine and compression deformity of a lower thoracic vertebral body with approximately ___ % height loss , not significantly changed compared to ___ .
    OUTPUT:
    
Persistent small right pleural effusion . Otherwise , no acute cardiothoracic abnormality .