The International Federation of Gynecology and Obstetricians (FIGO) staging classification for malignant epithelial carcinomas of the ovaries is also used for staging malignant germ cell tumors of the ovary. Germ cell tumors of the ovary are surgically staged.
Stage I Cancer is confined to one or both ovaries.
• Ia Cancer is limited to one ovary. There is no tumor on the surface of the ovary, the surface of the tumor is
unruptured and there is no ascites .
• Ib Growth is limited to both ovaries. There is no tumor on the surface of either ovary, the surfaces of the
tumors are unruptured and there is no ascites.
• Ic The tumor is either Stage Ia or Ib, but there is a tumor on the surface of one or both ovaries, at least one of
the tumors has ruptured, ascites is present or the abdominal washings contain malignant cells .
Stage II The cancer involves one or both ovaries with extension to other pelvic structures.
• IIa There is extension of the tumor or metastases to the uterus and/or the fallopian tubes.
