Steroid cell tumors, not otherwise specified (NOS), in an accessory ovary: a case report and literature review

Abstract Background Accessory ovaries are uncommon congenital abnormalities of the female reproductive tract. Steroid cell tumors at accessory ovaries are proportionately even rare. Case This 30-year-old woman had an accessory ovarian tumor attached to the infundibulum of the right fallopian tube which was solid and gross pathologically and microscopically showed the appearances of steroid cell tumor, NOS, a benign entity. Conclusion We report the first case of an accessory ovarian steroid cell tumor, NOS, which attached to the infundibulum of fallopian tube.