Osteoblastoma Mimic Failed Back Surgery

A 44 year-old women with persistent back and irradiate pain after discectomy in L5-S1 lumbar level presented a osteoblastoma in L4-L5 level. The osteoblastoma mimic a failed back surgery. She was successfully treated by removing the tumour with instrumented posteroalateral fusion. This case warns people that a new disease (such as a tumour in this case), irrelevant to the original one, may happen simultaneously even if the original one has been successfully treated and should be differentiated from the previous disease or surgical failure and complications.