Table 1 GTN: FIGO staging and classification (Washington 2000), IJGO vol. 95, suppl. 1: FIGO Annual Report, vol. 26 [5]

FIGO anatomical staging

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

Modified WHO prognostic scoring system as adapted by FIGO

Scores

0

1

2

4

Age

<40

≥40

–

–

Antecedent pregnancy

Mole

Abortion

Term

–

Interval months from index pregnancy

<4

4–6

7–12

>12

Pretreatment serum hCG (IU/L)

<10³

10³–10⁴

10⁴–10⁵

>10⁵

Largest tumor size (including uterus)

<3

3–4 cm

≥5 cm

–

Site of metastases

Lung

Spleen, kidney

Gastrointestinal

Liver, brain

Number of metastases

–

1–4

5–8

>8

Previous failed chemotherapy

–

–

Single drug

2 or more drugs