“…In one study, an asymptomatic tumefactive VRs in the pre-Rolandic area completely disappeared at MRI after 6 months [32]. Sixteen other studies [3,23,26,[44][45][46]60,67,70,73,74,76,80,83,85,88] which followed the natural course of 23 asymptomatic tumefactive VRs reported no change with a mean follow-up period of 3.3 years (range 1 month -17 years). Presenting symptoms are displayed in Table 3.…”