Fig. 4

Radiographic data at 10 years after radiotherapy: a, b Radiograph showing sclerotic bone in the L1 and L2 vertebral body. The L2 vertebral body was compressed, which induced local kyphosis of the thoracolumbar spine. c, d CT scan demonstrating calcification or sclerotic bone without obvious osteolytic lesion in the L1 and L2 vertebral bodies