Classification of Ovarian Neoplasms

Ovarian neoplasms may be classified as follows:

Surface Epithelial –Stromal Tumors

Serous Tumors

Benign (Cystadenoma)

Borderline tumors (Serous borderline tumor)

Malignant (Serous adenocarcinoma)

Mucinous Tumors

Benign (cystadenoma)

Borderline (mucinous borderline tumor)

Malignant (mucinous adenocarcinoma)

Endometrioid Tumors

Benign (cystadenoma)

Borderline (endometrioid borderline tumor)

Malignant (endometrioid adenocarcinoma)

Clear Cell Tumors

Benign

Borderline

Malignant (clear cell adenocarcinoma)

Transitional Cell Tumors

Brenner tumor

Brenner tumor of borderline malignancy

Malignant Brenner tumor

Transitional cell carcinoma (non-Brenner type)

Epithelial Stromal Tumors

Adenosarcoma

Malignant mixed mullerian tumors

Sex Cord Stromal Tumors

Granulosa tumors

Fibromas

Fibrothecomas

Thecomas

Sertoli cell tumors

Leydig cell tumors

Sex cord tumor with annular tubules

Gynandroblastoma

Steroid (lipid) cell tumors

Germ Cell Tumors

Teratoma

• Immature
• Mature –solid or cystic (dermoid cyst)
• Monodermal

Dysgerminoma

Yolk sac tumor (endodermal sinus tumor)

Mixed germ cell tumor

Malignant, not otherwise specified

Metastatic from Non-ovarian Primary

Colonic, appediceal

Gastric

Breast