Table 1:
FIGO anatomic staging for gestational trophoblastic neoplasia (GTN).
Stage I
Disease confined to the uterus
Stage II
GTN extends outside of the uterus, but is limited to the genital structures (adnexa, vagina, broad ligament)
Stage III
GTN extends to the lungs, with or without known genital tract involvement
Stage IV
All other metastatic sites
FIGO: International Federation of Gynecology and Obstetrics.