Fig. 4From: Recurrent lumbar-origin osteoblastoma treated with multiple surgery and carbon ion radiotherapy: a case reporta Axial CT of L4 obtained 3 months after the 2ndoperation. The region extended from the epidural space to the paravertebral area. b The same level on T2 axial MRI showed a fluid-fluid level containing lesion. Re-recurrence was suspectedBack to article page