World Health Organization classification of ovarian sex cord-stromal tumors
Tumor type | |
Pure stromal tumors | |
Fibroma | 4% of all ovarian tumors8 |
Cellular fibroma | |
Thecoma | 0.5–1% of all ovarian tumors16 |
Luteinized thecoma associated with sclerosing peritonitis | |
Fibrosarcoma | |
Signet ring stromal tumor | |
Sclerosing stromal tumor | 5% of all sex cord stromal tumors7 |
Microcystic stromal tumor | |
Leydig cell tumor | |
Steroid cell tumor | |
Steroid cell tumor, malignant | |
Pure sex cord tumors | |
Adult granulosa cell tumor | 95% of all granulosa cell tumors68 |
Juvenile granulosa cell tumor | 5% of all granulosa cell tumors68 |
Sertoli cell tumor | |
Sex cord tumors with annular tubules | 1.4% of all sex cord-stromal tumors81 |
Mixed sex cord stromal tumors | |
Sertoli–Leydig cell tumors | <0.5% of all ovarian tumors84 |
Well differentiated | |
Moderately differentiated | |
With heterologous elements | |
Poorly differentiated | |
With heterologous elements | |
Retiform | |
With heterologous elements | |
Sex cord-stromal tumor, not otherwise specified |