Fig. 1From: Recurrent lumbar-origin osteoblastoma treated with multiple surgery and carbon ion radiotherapy: a case reporta Axial CT of L4 (performed at a previous hospital) showed an osteolytic lesion around the left pedicle. The cortex was seen to be broken by the tumor. b T1 axial MRI of the L4 and L3/4 level with Gd enhancement. The left pedicle and its surrounding tissues show enhancement, while the tumor extends to the epidural spaceBack to article page