From 3 to 10% or more of MIB‐1 LIs of meningiomas have been reported to be related to higher recurrence rates or to be a prognostic factor for radiosurgical outcomes (Kim et al., 2012; Nakaya et al., 2009), whereas other studies have found that MIB‐1 LI is not useful for predicting tumor recurrence (Tyagi et al., 2004; Zhu et al., 2015). Here, MIB1 is linked to neoplasm.