NCIt definition : A rare, typically benign ovarian neoplasm composed of Sertoli cells. Patients may
present with pseudoprecocity, menometrorrhagia, amenorrhea, hirsutism, and hoarseness.
Rarely it may invade the ovarian stroma and extend beyond the ovary.;
Alternative definition : NICHD: A Sertoli cell tumor that occurs in the ovary.;