CD99 and neoplasm: IHC analysis demonstrated that tumor cells was Vimentin (+), α-Inhibin (+), CD99 (+), Calretinin (+), SF-1(+), AE1/AE3 (+), CD10 (+), ER (+), PR (+), AFP (−), EMA (−), SMA (−), CK7 (−), Ki-67 (+60%) (Table 1).