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. 2015 Jun 4;21(4):277–286. doi: 10.5152/dir.2015.34414

Table 1.

WHO classification scheme for ovarian sex cord-stromal tumors (2014)

Pure stromal tumors

  • Fibroma

  • Cellular fibroma

  • Thecoma

  • Luteinized thecoma associated with sclerosing peritonitis

  • Fibrosarcoma

  • Sclerosing stromal tumor

  • Signet-ring stromal tumor

  • Microcystic stromal tumor

  • Leydig cell tumor

  • Steroid cell tumor

  • Steroid cell tumor, malignant

Pure sex cord tumors

  • Adult granulosa cell tumor

  • Juvenile granulosa cell tumor

  • Sertoli cell tumor

  • Sex cord tumor with annular tubules

Mixed sex cord-stromal tumors

  • Sertoli-Leydig cell tumors

    • - Well-differentiated

    • - Moderately differentiated with heterologous elements

    • - Poorly differentiated with heterologous elements

    • - Retiform with heterologous elements

  • Sex cord-stromal tumours, NOS*

WHO, World Health Organization; NOS, not otherwise specified.