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Comparison of normalized tumor volume according to the locations of meningioma. (A) Meningioma size was compared between skull- and non-skull-base locations. (B) Meningioma size was compared among eight skull-base locations. CS refers to cavernous sinus; TS/PS/ACP refers to tuberculum sellae/planum sphenoidale/anterior clinoid process. *p < 0.05, **p < 0.01, and ***p < 0.001, respectively.
