“…In these cases, re-operation seems to be the last therapeutic option. Nevertheless, the existing studies on the question, if re-operation is useful could not answer this question [1,2,3,5,9,14,18,20,21,23,24,25,26]. In addition there are only a few studies available considering re-operation on patients with recurrent glioblastoma multiforme alone [5,6,9,26].…”