PATHOLOGIC CLASSIFICATION

Ovarian neoplasms are classified according to their tissue of origin and malignant potential. An abbreviated classification is shown below.

Epithelial Cell
(most common type, approx. 80%)

Germ Cell

Sex Cord Stromal

Metastases

Serous, mucinous, endometrioid, clear cell, transitional, undifferentiated

Dysgerminoma, immature (malignant) teratoma, endodermal sinus tumor

Sertoli-Leydig cell, granulose cell, thecoma, fibroma

Common origins: stomach, colon, pancreas, breast, lung